diff --git a/applications/pom.xml b/applications/pom.xml
index bea0637f..0c194db2 100644
--- a/applications/pom.xml
+++ b/applications/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud.stream.app</groupId>
 	<artifactId>applications</artifactId>
-	<version>3.2.2-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<name>applications</name>
 	<description>Infrastructure for stream applications</description>
 	<packaging>pom</packaging>
diff --git a/applications/processor/aggregator-processor/pom.xml b/applications/processor/aggregator-processor/pom.xml
index a279e221..93791a0c 100644
--- a/applications/processor/aggregator-processor/pom.xml
+++ b/applications/processor/aggregator-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/bridge-processor/pom.xml b/applications/processor/bridge-processor/pom.xml
index 8b40d12d..7c8f0262 100644
--- a/applications/processor/bridge-processor/pom.xml
+++ b/applications/processor/bridge-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/filter-processor/pom.xml b/applications/processor/filter-processor/pom.xml
index 33b7d37f..407b40d3 100644
--- a/applications/processor/filter-processor/pom.xml
+++ b/applications/processor/filter-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/groovy-processor/pom.xml b/applications/processor/groovy-processor/pom.xml
index 2b610f17..b604ea3f 100644
--- a/applications/processor/groovy-processor/pom.xml
+++ b/applications/processor/groovy-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/header-enricher-processor/pom.xml b/applications/processor/header-enricher-processor/pom.xml
index 01d78c17..25e3d695 100644
--- a/applications/processor/header-enricher-processor/pom.xml
+++ b/applications/processor/header-enricher-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/http-request-processor/pom.xml b/applications/processor/http-request-processor/pom.xml
index 9c5850ba..3a2a4990 100644
--- a/applications/processor/http-request-processor/pom.xml
+++ b/applications/processor/http-request-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/image-recognition-processor/pom.xml b/applications/processor/image-recognition-processor/pom.xml
index 6fd3b2d7..1e434727 100644
--- a/applications/processor/image-recognition-processor/pom.xml
+++ b/applications/processor/image-recognition-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/object-detection-processor/pom.xml b/applications/processor/object-detection-processor/pom.xml
index 3ef63108..33efdeec 100644
--- a/applications/processor/object-detection-processor/pom.xml
+++ b/applications/processor/object-detection-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/pom.xml b/applications/processor/pom.xml
index 93c8f69b..2dcfe9de 100644
--- a/applications/processor/pom.xml
+++ b/applications/processor/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>org.springframework.cloud.stream.app</groupId>
     <artifactId>processor</artifactId>
-    <version>3.2.2-SNAPSHOT</version>
+    <version>4.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <modules>
diff --git a/applications/processor/script-processor/pom.xml b/applications/processor/script-processor/pom.xml
index 4f665277..db08a99e 100644
--- a/applications/processor/script-processor/pom.xml
+++ b/applications/processor/script-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/semantic-segmentation-processor/pom.xml b/applications/processor/semantic-segmentation-processor/pom.xml
index ef3c6324..1ad0c1ad 100644
--- a/applications/processor/semantic-segmentation-processor/pom.xml
+++ b/applications/processor/semantic-segmentation-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/splitter-processor/pom.xml b/applications/processor/splitter-processor/pom.xml
index 4f2ccc94..42c70079 100644
--- a/applications/processor/splitter-processor/pom.xml
+++ b/applications/processor/splitter-processor/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/processor/transform-processor/pom.xml b/applications/processor/transform-processor/pom.xml
index 1d2c9d32..897777a7 100644
--- a/applications/processor/transform-processor/pom.xml
+++ b/applications/processor/transform-processor/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.cloud.stream.app</groupId>
 		<artifactId>stream-applications-core</artifactId>
-		<version>3.2.2-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/applications/processor/twitter-trend-processor/pom.xml b/applications/processor/twitter-trend-processor/pom.xml
index b7cd5cb3..06440c42 100644
--- a/applications/processor/twitter-trend-processor/pom.xml
+++ b/applications/processor/twitter-trend-processor/pom.xml
@@ -6,12 +6,12 @@
     <artifactId>twitter-trend-processor</artifactId>
     <name>twitter-trend-processor</name>
     <description>twitter trend processor apps</description>
-    <version>3.2.2-SNAPSHOT</version>
+    <version>4.0.0-SNAPSHOT</version>
 
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/analytics-sink/pom.xml b/applications/sink/analytics-sink/pom.xml
index bdd50161..551f96f1 100644
--- a/applications/sink/analytics-sink/pom.xml
+++ b/applications/sink/analytics-sink/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/cassandra-sink/pom.xml b/applications/sink/cassandra-sink/pom.xml
index d8190acc..ae34aeb0 100644
--- a/applications/sink/cassandra-sink/pom.xml
+++ b/applications/sink/cassandra-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/elasticsearch-sink/pom.xml b/applications/sink/elasticsearch-sink/pom.xml
index 4cd35af1..e5c8b1b2 100644
--- a/applications/sink/elasticsearch-sink/pom.xml
+++ b/applications/sink/elasticsearch-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/file-sink/pom.xml b/applications/sink/file-sink/pom.xml
index 305abda8..146d7807 100644
--- a/applications/sink/file-sink/pom.xml
+++ b/applications/sink/file-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/ftp-sink/pom.xml b/applications/sink/ftp-sink/pom.xml
index da63ffdc..30513f7b 100644
--- a/applications/sink/ftp-sink/pom.xml
+++ b/applications/sink/ftp-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/geode-sink/pom.xml b/applications/sink/geode-sink/pom.xml
index b8e4048b..2f3f0d6c 100644
--- a/applications/sink/geode-sink/pom.xml
+++ b/applications/sink/geode-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/jdbc-sink/pom.xml b/applications/sink/jdbc-sink/pom.xml
index f6120d5f..ca6ac916 100644
--- a/applications/sink/jdbc-sink/pom.xml
+++ b/applications/sink/jdbc-sink/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/log-sink/pom.xml b/applications/sink/log-sink/pom.xml
index 857f6e3a..d41fadee 100644
--- a/applications/sink/log-sink/pom.xml
+++ b/applications/sink/log-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/mongodb-sink/pom.xml b/applications/sink/mongodb-sink/pom.xml
index 5ff39df7..d9a143c0 100644
--- a/applications/sink/mongodb-sink/pom.xml
+++ b/applications/sink/mongodb-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/mqtt-sink/pom.xml b/applications/sink/mqtt-sink/pom.xml
index 95f60e0d..99a4b065 100644
--- a/applications/sink/mqtt-sink/pom.xml
+++ b/applications/sink/mqtt-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/pgcopy-sink/pom.xml b/applications/sink/pgcopy-sink/pom.xml
index a2ad7c62..6bfc8511 100644
--- a/applications/sink/pgcopy-sink/pom.xml
+++ b/applications/sink/pgcopy-sink/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.cloud.stream.app</groupId>
 		<artifactId>stream-applications-core</artifactId>
-		<version>3.2.2-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/applications/sink/pom.xml b/applications/sink/pom.xml
index e7c53af6..1c702839 100644
--- a/applications/sink/pom.xml
+++ b/applications/sink/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>org.springframework.cloud.stream.app</groupId>
     <artifactId>sink</artifactId>
-    <version>3.2.2-SNAPSHOT</version>
+    <version>4.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <modules>
diff --git a/applications/sink/rabbit-sink/pom.xml b/applications/sink/rabbit-sink/pom.xml
index 8f728bb2..c9223010 100644
--- a/applications/sink/rabbit-sink/pom.xml
+++ b/applications/sink/rabbit-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/redis-sink/pom.xml b/applications/sink/redis-sink/pom.xml
index 3e90135c..e183e8f5 100644
--- a/applications/sink/redis-sink/pom.xml
+++ b/applications/sink/redis-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/router-sink/pom.xml b/applications/sink/router-sink/pom.xml
index 6f956b54..417f1083 100644
--- a/applications/sink/router-sink/pom.xml
+++ b/applications/sink/router-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/rsocket-sink/pom.xml b/applications/sink/rsocket-sink/pom.xml
index 19562a5d..27f9aed5 100644
--- a/applications/sink/rsocket-sink/pom.xml
+++ b/applications/sink/rsocket-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/s3-sink/pom.xml b/applications/sink/s3-sink/pom.xml
index d9d8233d..9cffa629 100644
--- a/applications/sink/s3-sink/pom.xml
+++ b/applications/sink/s3-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/sftp-sink/pom.xml b/applications/sink/sftp-sink/pom.xml
index 2b06201d..f1fc4c5e 100644
--- a/applications/sink/sftp-sink/pom.xml
+++ b/applications/sink/sftp-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/tcp-sink/pom.xml b/applications/sink/tcp-sink/pom.xml
index d01edc20..1704cea1 100644
--- a/applications/sink/tcp-sink/pom.xml
+++ b/applications/sink/tcp-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/throughput-sink/pom.xml b/applications/sink/throughput-sink/pom.xml
index 3109fe89..cbf708bb 100644
--- a/applications/sink/throughput-sink/pom.xml
+++ b/applications/sink/throughput-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/twitter-message-sink/pom.xml b/applications/sink/twitter-message-sink/pom.xml
index db0dc1f2..8ed15f1c 100644
--- a/applications/sink/twitter-message-sink/pom.xml
+++ b/applications/sink/twitter-message-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/twitter-update-sink/pom.xml b/applications/sink/twitter-update-sink/pom.xml
index ed9ea4d2..3ac4bdd0 100644
--- a/applications/sink/twitter-update-sink/pom.xml
+++ b/applications/sink/twitter-update-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/wavefront-sink/pom.xml b/applications/sink/wavefront-sink/pom.xml
index 514848b4..18499366 100644
--- a/applications/sink/wavefront-sink/pom.xml
+++ b/applications/sink/wavefront-sink/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.cloud.stream.app</groupId>
 		<artifactId>stream-applications-core</artifactId>
-		<version>3.2.2-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/applications/sink/websocket-sink/pom.xml b/applications/sink/websocket-sink/pom.xml
index fa65f1d9..a54f3fe7 100644
--- a/applications/sink/websocket-sink/pom.xml
+++ b/applications/sink/websocket-sink/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/sink/zeromq-sink/pom.xml b/applications/sink/zeromq-sink/pom.xml
index 77ebb92f..e31bb96b 100644
--- a/applications/sink/zeromq-sink/pom.xml
+++ b/applications/sink/zeromq-sink/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/cdc-debezium-source/pom.xml b/applications/source/cdc-debezium-source/pom.xml
index a338084d..a69a2cca 100644
--- a/applications/source/cdc-debezium-source/pom.xml
+++ b/applications/source/cdc-debezium-source/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.cloud.stream.app</groupId>
 		<artifactId>stream-applications-core</artifactId>
-		<version>3.2.2-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/applications/source/file-source/pom.xml b/applications/source/file-source/pom.xml
index 8c32c38d..f617bf02 100644
--- a/applications/source/file-source/pom.xml
+++ b/applications/source/file-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/ftp-source/pom.xml b/applications/source/ftp-source/pom.xml
index c0683de5..d43417bc 100644
--- a/applications/source/ftp-source/pom.xml
+++ b/applications/source/ftp-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/geode-source/pom.xml b/applications/source/geode-source/pom.xml
index 0938468e..5a2cdd97 100644
--- a/applications/source/geode-source/pom.xml
+++ b/applications/source/geode-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
     <dependencies>
diff --git a/applications/source/http-source/pom.xml b/applications/source/http-source/pom.xml
index 43ad1bb6..24e20b1a 100644
--- a/applications/source/http-source/pom.xml
+++ b/applications/source/http-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/jdbc-source/pom.xml b/applications/source/jdbc-source/pom.xml
index bf57384d..71b8b4e7 100644
--- a/applications/source/jdbc-source/pom.xml
+++ b/applications/source/jdbc-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/jms-source/pom.xml b/applications/source/jms-source/pom.xml
index 6f8810a6..07b5c162 100644
--- a/applications/source/jms-source/pom.xml
+++ b/applications/source/jms-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/load-generator-source/pom.xml b/applications/source/load-generator-source/pom.xml
index 41f1015d..12fd09a8 100644
--- a/applications/source/load-generator-source/pom.xml
+++ b/applications/source/load-generator-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/mail-source/pom.xml b/applications/source/mail-source/pom.xml
index ae1df52f..9b7d61bb 100644
--- a/applications/source/mail-source/pom.xml
+++ b/applications/source/mail-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/mongodb-source/pom.xml b/applications/source/mongodb-source/pom.xml
index ba30fb26..b72b9d75 100644
--- a/applications/source/mongodb-source/pom.xml
+++ b/applications/source/mongodb-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/mqtt-source/pom.xml b/applications/source/mqtt-source/pom.xml
index 54b0233f..6c7622ca 100644
--- a/applications/source/mqtt-source/pom.xml
+++ b/applications/source/mqtt-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/pom.xml b/applications/source/pom.xml
index dbc9ee5d..324b8326 100644
--- a/applications/source/pom.xml
+++ b/applications/source/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>org.springframework.cloud.stream.app</groupId>
     <artifactId>source</artifactId>
-    <version>3.2.2-SNAPSHOT</version>
+    <version>4.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <modules>
diff --git a/applications/source/rabbit-source/pom.xml b/applications/source/rabbit-source/pom.xml
index b24b52cb..320c2685 100644
--- a/applications/source/rabbit-source/pom.xml
+++ b/applications/source/rabbit-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/s3-source/pom.xml b/applications/source/s3-source/pom.xml
index 9bf2be87..d8d4fa76 100644
--- a/applications/source/s3-source/pom.xml
+++ b/applications/source/s3-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/sftp-source/pom.xml b/applications/source/sftp-source/pom.xml
index 37840fc5..17e2be65 100644
--- a/applications/source/sftp-source/pom.xml
+++ b/applications/source/sftp-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/syslog-source/pom.xml b/applications/source/syslog-source/pom.xml
index 22031146..a2743410 100644
--- a/applications/source/syslog-source/pom.xml
+++ b/applications/source/syslog-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/tcp-source/pom.xml b/applications/source/tcp-source/pom.xml
index 2a4e4abd..559572e7 100644
--- a/applications/source/tcp-source/pom.xml
+++ b/applications/source/tcp-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/time-source/pom.xml b/applications/source/time-source/pom.xml
index 014d6cac..9993e67d 100644
--- a/applications/source/time-source/pom.xml
+++ b/applications/source/time-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/twitter-message-source/pom.xml b/applications/source/twitter-message-source/pom.xml
index 4032a7e8..ee61201a 100644
--- a/applications/source/twitter-message-source/pom.xml
+++ b/applications/source/twitter-message-source/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.cloud.stream.app</groupId>
 		<artifactId>stream-applications-core</artifactId>
-		<version>3.2.2-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/applications/source/twitter-search-source/pom.xml b/applications/source/twitter-search-source/pom.xml
index 8f39f0de..a0ec2be9 100644
--- a/applications/source/twitter-search-source/pom.xml
+++ b/applications/source/twitter-search-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/twitter-stream-source/pom.xml b/applications/source/twitter-stream-source/pom.xml
index f6ae3ed6..bebbff5f 100644
--- a/applications/source/twitter-stream-source/pom.xml
+++ b/applications/source/twitter-stream-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/websocket-source/pom.xml b/applications/source/websocket-source/pom.xml
index 4124d231..e072b687 100644
--- a/applications/source/websocket-source/pom.xml
+++ b/applications/source/websocket-source/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/source/zeromq-source/pom.xml b/applications/source/zeromq-source/pom.xml
index 80e1766a..663bc979 100644
--- a/applications/source/zeromq-source/pom.xml
+++ b/applications/source/zeromq-source/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
diff --git a/applications/stream-applications-core/pom.xml b/applications/stream-applications-core/pom.xml
index d6cbb307..45279e6a 100644
--- a/applications/stream-applications-core/pom.xml
+++ b/applications/stream-applications-core/pom.xml
@@ -11,14 +11,14 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-build</artifactId>
-        <version>1.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath/>
     </parent>
 
     <properties>
-        <revision>3.2.2-SNAPSHOT</revision>
+        <revision>4.0.0-SNAPSHOT</revision>
         <stream-apps-core.version>${revision}</stream-apps-core.version>
-        <java-functions.version>1.2.2-SNAPSHOT</java-functions.version>
+        <java-functions.version>4.0.0-SNAPSHOT</java-functions.version>
         <apps.base-image>springcloud/baseimage:1.0.1</apps.base-image>
         <spring-cloud-dataflow-apps-generator-plugin.version>1.0.7</spring-cloud-dataflow-apps-generator-plugin.version>
         <spring-cloud-dataflow-apps-docs-plugin.version>1.0.7</spring-cloud-dataflow-apps-docs-plugin.version>
diff --git a/etc/release-tools/apps-upgrade-after-ga.sh b/etc/release-tools/apps-upgrade-after-ga.sh
index 108fafe5..f1c5fe2b 100755
--- a/etc/release-tools/apps-upgrade-after-ga.sh
+++ b/etc/release-tools/apps-upgrade-after-ga.sh
@@ -26,7 +26,7 @@ function iterate_through_apps_folders_and_update {
     ../../../mvnw -Ddisable.checks=true versions:set -DnewVersion=$VERSION -DgenerateBackupPoms=false
     #../../../mvnw -Ddisable.checks=true versions:update-parent -DparentVersion=$PARENT_VERSION -Pspring -DgenerateBackupPoms=false
     # only used after a release for updating parent versions.
-    sed -i '' 's/<version>3.2.1/<version>'3.2.2-SNAPSHOT'/g' pom.xml
+    sed -i '' 's/<version>3.2.2-SNAPSHOT/<version>'4.0.0-SNAPSHOT'/g' pom.xml
     popd
   done
 
diff --git a/functions/pom.xml b/functions/pom.xml
index 39c52cfe..fab5b230 100644
--- a/functions/pom.xml
+++ b/functions/pom.xml
@@ -13,12 +13,12 @@
 	<parent>
 		<groupId>org.springframework.cloud.stream.app</groupId>
 		<artifactId>stream-applications-build</artifactId>
-		<version>1.2.2-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<revision>1.2.2-SNAPSHOT</revision>
+		<revision>4.0.0-SNAPSHOT</revision>
 	</properties>
 
 	<modules>
diff --git a/pom.xml b/pom.xml
index 3507f5e8..d3b55db9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>org.springframework.cloud.stream.app</groupId>
     <artifactId>stream-applications</artifactId>
-    <version>3.2.2-SNAPSHOT</version>
+    <version>4.0.0-SNAPSHOT</version>
     <name>stream-applications</name>
     <description>Functions and Infrastructure for stream applications</description>
     <packaging>pom</packaging>
diff --git a/stream-applications-build/pom.xml b/stream-applications-build/pom.xml
index e5fda3c3..521970ea 100644
--- a/stream-applications-build/pom.xml
+++ b/stream-applications-build/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>org.springframework.cloud.stream.app</groupId>
 	<artifactId>stream-applications-build</artifactId>
-	<version>1.2.2-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<name>stream-applications-build</name>
 	<description>Common Parent for Functions and Applications</description>
 	<packaging>pom</packaging>
diff --git a/stream-applications-release-train/pom.xml b/stream-applications-release-train/pom.xml
index 02b968cd..dc9f3dc9 100644
--- a/stream-applications-release-train/pom.xml
+++ b/stream-applications-release-train/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <groupId>org.springframework.cloud.stream.app</groupId>
         <artifactId>stream-applications-core</artifactId>
-        <version>3.2.2-SNAPSHOT</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../applications/stream-applications-core/pom.xml</relativePath>
     </parent>
 
@@ -19,8 +19,8 @@
     </modules>
 
     <properties>
-        <revision>2021.1.3-SNAPSHOT</revision>
-        <apps.version>3.2.2-SNAPSHOT</apps.version>
+        <revision>2022.0.0-SNAPSHOT</revision>
+        <apps.version>4.0.0-SNAPSHOT</apps.version>
         <apps.harbor.version>3.2.0</apps.harbor.version>
         <apps.docker.tag>${apps.version}</apps.docker.tag>
     </properties>