diff --git a/build.gradle b/build.gradle
index 3c483a4218..8e4f8f70ea 100644
--- a/build.gradle
+++ b/build.gradle
@@ -129,21 +129,21 @@ subprojects { subproject ->
 		mysqlVersion = '8.0.15'
 		pahoMqttClientVersion = '1.2.0'
 		postgresVersion = '42.2.5'
-		reactorNettyVersion = '0.9.0.BUILD-SNAPSHOT'
-		reactorVersion = '3.3.0.BUILD-SNAPSHOT'
+		reactorNettyVersion = '0.9.0.M1'
+		reactorVersion = '3.3.0.M1'
 		resilience4jVersion = '0.14.1'
 		romeToolsVersion = '1.12.0'
-		rsocketVersion = '0.12.2-RC3-SNAPSHOT'
+		rsocketVersion = '0.12.2-RC2'
 		servletApiVersion = '4.0.1'
 		smackVersion = '4.3.3'
-		springAmqpVersion = project.hasProperty('springAmqpVersion') ? project.springAmqpVersion : '2.2.0.BUILD-SNAPSHOT'
-		springDataJpaVersion = '2.2.0.BUILD-SNAPSHOT'
-		springDataMongoVersion = '2.2.0.BUILD-SNAPSHOT'
-		springDataRedisVersion = '2.2.0.BUILD-SNAPSHOT'
-		springGemfireVersion = '2.2.0.BUILD-SNAPSHOT'
-		springSecurityVersion = '5.2.0.BUILD-SNAPSHOT'
+		springAmqpVersion = project.hasProperty('springAmqpVersion') ? project.springAmqpVersion : '2.2.0.M2'
+		springDataJpaVersion = '2.2.0.M4'
+		springDataMongoVersion = '2.2.0.M4'
+		springDataRedisVersion = '2.2.0.M4'
+		springGemfireVersion = '2.2.0.M4'
+		springSecurityVersion = '5.2.0.M2'
 		springRetryVersion = '1.2.4.RELEASE'
-		springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.2.0.BUILD-SNAPSHOT'
+		springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.2.0.M2'
 		springWsVersion = '3.0.7.RELEASE'
 		tomcatVersion = "9.0.17"
 		xstreamVersion = '1.4.11.1'