diff --git a/eclipse-distribution/org.springframework.boot.ide.product.e428/category.xml b/eclipse-distribution/org.springframework.boot.ide.product.e431/category.xml
similarity index 89%
rename from eclipse-distribution/org.springframework.boot.ide.product.e428/category.xml
rename to eclipse-distribution/org.springframework.boot.ide.product.e431/category.xml
index 25fb21d60..6aa3689ad 100644
--- a/eclipse-distribution/org.springframework.boot.ide.product.e428/category.xml
+++ b/eclipse-distribution/org.springframework.boot.ide.product.e431/category.xml
@@ -120,9 +120,9 @@
 	<bundle id="org.springsource.ide.eclipse.commons.tests.util.source"/>
 
 	<bundle id="io.projectreactor.reactor-core"/>
-	<bundle id="io.projectreactor.reactor-core.source"/>
+<!--	<bundle id="io.projectreactor.reactor-core.source"/> -->
 	<bundle id="org.reactivestreams.reactive-streams"/>
-	<bundle id="org.reactivestreams.reactive-streams.source"/>
+<!--	<bundle id="org.reactivestreams.reactive-streams.source"/> -->
 
 	<feature id="org.eclipse.mylyn.wikitext_feature"/>
 	<feature id="org.eclipse.tm4e.feature"/>
@@ -130,10 +130,10 @@
 	<bundle id="javassist"/>
 <!--	<bundle id="javassist.source"/> -->
 	<bundle id="javax.activation"/>
-	<bundle id="javax.activation.source"/>
-	<bundle id="javax.annotation"/>
-	<bundle id="javax.annotation.source"/>
-	<bundle id="javax.ws.rs"/>
+<!--	<bundle id="javax.activation.source"/> -->
+<!--	<bundle id="javax.annotation"/> -->
+<!--	<bundle id="javax.annotation.source"/> -->
+<!--	<bundle id="javax.ws.rs"/> -->
 <!--	<bundle id="javax.xml.bind"/> -->
 <!--	<bundle id="javax.xml.bind.source"/> -->
 	<bundle id="javax.xml.stream"/>
@@ -157,21 +157,21 @@
 	<bundle id="org.jsoup"/>
 	<bundle id="org.apache.commons.lang3"/>
 	<bundle id="org.apache.commons.collections"/>
-    <bundle id="org.bouncycastle.bcpg"/>
-    <bundle id="org.bouncycastle.bcpg.source"/>
-    <bundle id="org.bouncycastle.bcpkix"/>
-    <bundle id="org.bouncycastle.bcpkix.source"/>
-    <bundle id="org.bouncycastle.bcprov"/>
-    <bundle id="org.bouncycastle.bcprov.source"/>
+<!--    <bundle id="org.bouncycastle.bcpg"/> -->
+<!--    <bundle id="org.bouncycastle.bcpg.source"/> -->
+<!--    <bundle id="org.bouncycastle.bcpkix"/> -->
+<!--    <bundle id="org.bouncycastle.bcpkix.source"/> -->
+<!--    <bundle id="org.bouncycastle.bcprov"/> -->
+<!--    <bundle id="org.bouncycastle.bcprov.source"/> -->
     <bundle id="com.hierynomus.sshj"/>
-    <bundle id="com.hierynomus.sshj.source"/>
+<!--    <bundle id="com.hierynomus.sshj.source"/> -->
     <bundle id="com.jcraft.jzlib"/>
-    <bundle id="com.jcraft.jzlib.source"/>
+<!--    <bundle id="com.jcraft.jzlib.source"/> -->
 	<bundle id="com.fasterxml.jackson.core.jackson-annotations"/>
 	<bundle id="com.fasterxml.jackson.core.jackson-core"/>
 	<bundle id="com.fasterxml.jackson.core.jackson-databind"/>
     <bundle id="net.i2p.crypto.eddsa"/>
-    <bundle id="net.i2p.crypto.eddsa.source"/>
+<!--    <bundle id="net.i2p.crypto.eddsa.source"/> -->
 
 	<!-- additional test bundles, required for other tests that might reuse this, e.g. from STS3 -->
 <!--	<bundle id="org.springframework.ide.eclipse.boot.dash.test"/>
diff --git a/eclipse-distribution/org.springframework.boot.ide.product.e428/org.springframework.boot.ide.product b/eclipse-distribution/org.springframework.boot.ide.product.e431/org.springframework.boot.ide.product
similarity index 100%
rename from eclipse-distribution/org.springframework.boot.ide.product.e428/org.springframework.boot.ide.product
rename to eclipse-distribution/org.springframework.boot.ide.product.e431/org.springframework.boot.ide.product
diff --git a/eclipse-distribution/org.springframework.boot.ide.product.e428/p2.inf b/eclipse-distribution/org.springframework.boot.ide.product.e431/p2.inf
similarity index 100%
rename from eclipse-distribution/org.springframework.boot.ide.product.e428/p2.inf
rename to eclipse-distribution/org.springframework.boot.ide.product.e431/p2.inf
diff --git a/eclipse-distribution/org.springframework.boot.ide.product.e428/pom.xml b/eclipse-distribution/org.springframework.boot.ide.product.e431/pom.xml
similarity index 99%
rename from eclipse-distribution/org.springframework.boot.ide.product.e428/pom.xml
rename to eclipse-distribution/org.springframework.boot.ide.product.e431/pom.xml
index c086109ea..1e3343b7b 100644
--- a/eclipse-distribution/org.springframework.boot.ide.product.e428/pom.xml
+++ b/eclipse-distribution/org.springframework.boot.ide.product.e431/pom.xml
@@ -329,7 +329,7 @@
 						<configuration>
 							<target>
 								<copy file="${project.build.directory}/../../common/html/nightly-generic-snippet-incl-apple-m1.html" tofile="${project.build.directory}/sts4-nightly-${dist.target.major}.html" overwrite="true"/>
-		
+
 								<replace file="${project.build.directory}/sts4-nightly-${dist.target.major}.html" token="@QUALIFIER@" value="${unqualifiedVersion}.${p2.qualifier}" summary="yes" />
 								<replace file="${project.build.directory}/sts4-nightly-${dist.target.major}.html" token="@TARGET@" value="${dist.target}" summary="yes" />
 								<replace file="${project.build.directory}/sts4-nightly-${dist.target.major}.html" token="@MAJOR-TARGET@" value="${dist.target.major}" summary="yes" />
@@ -429,4 +429,5 @@
 			</build>
 		</profile>
 	</profiles>
+
 </project>
\ No newline at end of file
diff --git a/eclipse-distribution/pom.xml b/eclipse-distribution/pom.xml
index b81128f29..33f62fc5b 100644
--- a/eclipse-distribution/pom.xml
+++ b/eclipse-distribution/pom.xml
@@ -129,99 +129,6 @@
 			</properties>
 		</profile>
 
-		<profile>
-			<id>e428</id>
-			<properties>
-				<dist.target>e4.28.0</dist.target>
-				<dist.target.major>e4.28</dist.target.major>
-				<dist.platform.name>2023-06</dist.platform.name>
-				<dist.platform.name.long>2023-06 (4.28)</dist.platform.name.long>
-				<dist.platform.id>2023-06</dist.platform.id>
-				<dist.platform.version>4.28</dist.platform.version>
-				<package.qualifierPrefix>e428</package.qualifierPrefix>
-			</properties>
-			<repositories>
-				<repository>
-					<id>2023-06</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/releases/2023-06/</url>
-				</repository>
-				<repository>
-					<id>orbit</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/tools/orbit/downloads/drops/R20230531010532/repository</url>
-				</repository>
-				<repository>
-					<id>m2e</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/technology/m2e/releases/latest/</url>
-				</repository>
-				<repository>
-					<id>latest-m2e-wtp-release</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/m2e-wtp/releases/latest/</url>
-				</repository>
-				<repository>
-					<id>maven-extras-mirror</id>
-					<layout>p2</layout>
-					<url>https://download.springsource.com/release/TOOLS/third-party/m2e-sts310-signed/</url>
-				</repository>
-				<repository>
-					<id>maven-egit</id>
-					<layout>p2</layout>
-					<url>https://github.com/tesla/m2eclipse-egit/releases/download/0.17.0/</url>
-				</repository>
-				<repository>
-					<id>maven-wro4j</id>
-					<layout>p2</layout>
-					<url>https://github.com/jbosstools/m2e-wro4j/releases/download/1.2.1/</url>
-				</repository>
-				<repository>
-					<id>maven-dependency-support</id>
-					<layout>p2</layout>
-					<url>https://ianbrandt.github.io/m2e-maven-dependency-plugin/</url>
-				</repository>
-				<repository>
-					<id>mylyn-markdown</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/mylyn/docs/releases/3.0.45/</url>
-				</repository>
-				<repository>
-					<id>wildwebdeveloper</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/wildwebdeveloper/releases/latest/</url>
-				</repository>
-				<repository>
-					<id>lsp4e</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/lsp4e/releases/0.23.0/</url>
-<!--					<url>https://download.eclipse.org/lsp4e/snapshots/</url> -->
-				</repository>
-				<repository>
-					<id>tm4e-snapshots</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/tm4e/releases/0.7.1/</url>
-<!--					<url>https://download.eclipse.org/tm4e/snapshots/</url> -->
-				</repository>
-<!--				<repository>
-					<id>chromium-binaries</id>
-					<layout>p2</layout>
-					<url>https://dl.maketechnology.io/chromium-cef/rls/repository</url>
-				</repository> -->
-			</repositories> 
-			<modules>
-				<!-- Xterm modules -->
-<!--				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm</module>
-				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.feature</module>
-				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.linux.x86_64</module>
-				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.macosx.x86_64</module>
-				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.win32.x86_64</module>
--->
-				<module>org.springframework.boot.ide.product.e428</module>
-			</modules>
-
-		</profile>
-
 		<profile>
 			<id>e429</id>
 			<properties>
@@ -330,7 +237,7 @@
 				<repository>
 					<id>2023-12</id>
 					<layout>p2</layout>
-					<url>https://download.eclipse.org/staging/2023-12/</url>
+					<url>https://download.eclipse.org/releases/2023-12/</url>
 				</repository>
 				<repository>
 					<id>orbit</id>
@@ -380,14 +287,14 @@
 				<repository>
 					<id>lsp4e</id>
 					<layout>p2</layout>
-					<url>https://download.eclipse.org/lsp4e/releases/0.24.5/</url>
-<!--					<url>https://download.eclipse.org/lsp4e/snapshots/</url> -->
+<!--					<url>https://download.eclipse.org/lsp4e/releases/0.24.5/</url> -->
+					<url>https://download.eclipse.org/lsp4e/snapshots/</url>
 				</repository>
 				<repository>
 					<id>tm4e-snapshots</id>
 					<layout>p2</layout>
-					<url>https://download.eclipse.org/tm4e/releases/0.8.1/</url>
-<!--					<url>https://download.eclipse.org/tm4e/snapshots/</url> -->
+<!--					<url>https://download.eclipse.org/tm4e/releases/0.8.1/</url> -->
+					<url>https://download.eclipse.org/tm4e/snapshots/</url>
 				</repository>
 <!--				<repository>
 					<id>chromium-binaries</id>
@@ -408,6 +315,99 @@
 
 		</profile>
 
+		<profile>
+			<id>e431</id>
+			<properties>
+				<dist.target>e4.31.0</dist.target>
+				<dist.target.major>e4.31</dist.target.major>
+				<dist.platform.name>2024-03</dist.platform.name>
+				<dist.platform.name.long>2024-03 (4.31)</dist.platform.name.long>
+				<dist.platform.id>2024-03</dist.platform.id>
+				<dist.platform.version>4.31</dist.platform.version>
+				<package.qualifierPrefix>e431</package.qualifierPrefix>
+			</properties>
+			<repositories>
+				<repository>
+					<id>2023-12</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/staging/2024-03/</url>
+				</repository>
+				<repository>
+					<id>orbit</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/2024-03</url>
+				</repository>
+				<repository>
+					<id>m2e</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/technology/m2e/releases/latest/</url>
+				</repository>
+				<repository>
+					<id>latest-m2e-wtp-release</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/m2e-wtp/releases/latest/</url>
+				</repository>
+				<repository>
+					<id>maven-extras-mirror</id>
+					<layout>p2</layout>
+					<url>https://download.springsource.com/release/TOOLS/third-party/m2e-sts310-signed/</url>
+				</repository>
+				<repository>
+					<id>maven-egit</id>
+					<layout>p2</layout>
+					<url>https://github.com/tesla/m2eclipse-egit/releases/download/0.17.0/</url>
+				</repository>
+				<repository>
+					<id>maven-wro4j</id>
+					<layout>p2</layout>
+					<url>https://github.com/jbosstools/m2e-wro4j/releases/download/1.2.1/</url>
+				</repository>
+				<repository>
+					<id>maven-dependency-support</id>
+					<layout>p2</layout>
+					<url>https://ianbrandt.github.io/m2e-maven-dependency-plugin/</url>
+				</repository>
+				<repository>
+					<id>mylyn-markdown</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/mylyn/docs/releases/3.0.45/</url>
+				</repository>
+				<repository>
+					<id>wildwebdeveloper</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/wildwebdeveloper/releases/latest/</url>
+				</repository>
+				<repository>
+					<id>lsp4e</id>
+					<layout>p2</layout>
+<!--					<url>https://download.eclipse.org/lsp4e/releases/0.24.5/</url> -->
+					<url>https://download.eclipse.org/lsp4e/snapshots/</url>
+				</repository>
+				<repository>
+					<id>tm4e-snapshots</id>
+					<layout>p2</layout>
+<!--					<url>https://download.eclipse.org/tm4e/releases/0.8.1/</url> -->
+					<url>https://download.eclipse.org/tm4e/snapshots/</url>
+				</repository>
+<!--				<repository>
+					<id>chromium-binaries</id>
+					<layout>p2</layout>
+					<url>https://dl.maketechnology.io/chromium-cef/rls/repository</url>
+				</repository> -->
+			</repositories> 
+			<modules>
+				<!-- Xterm modules -->
+<!--				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm</module>
+				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.feature</module>
+				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.linux.x86_64</module>
+				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.macosx.x86_64</module>
+				<module>../eclipse-extensions/org.springframework.ide.eclipse.xterm.win32.x86_64</module>
+-->
+				<module>org.springframework.boot.ide.product.e431</module>
+			</modules>
+
+		</profile>
+
 		<profile>
 			<id>bundle-tests</id>
 			<activation>
diff --git a/eclipse-language-servers/pom.xml b/eclipse-language-servers/pom.xml
index b1cc4c740..d74c090a2 100644
--- a/eclipse-language-servers/pom.xml
+++ b/eclipse-language-servers/pom.xml
@@ -138,59 +138,6 @@
 			</properties>
 		</profile>
 
-		<profile>
-			<id>e428</id>
-			<properties>
-				<dist.target>e4.28.0</dist.target>
-				<dist.target.major>e4.28</dist.target.major>
-				<dist.platform.name>2023-06</dist.platform.name>
-				<dist.platform.name.long>2023-06 (4.28)</dist.platform.name.long>
-				<dist.platform.id>2023-06</dist.platform.id>
-				<dist.platform.version>4.28</dist.platform.version>
-				<package.qualifierPrefix>e428</package.qualifierPrefix>
-			</properties>
-			<repositories>
-				<repository>
-					<id>2023-06</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/releases/2023-06/</url>
-				</repository>
-				<repository>
-					<id>orbit</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/tools/orbit/downloads/drops/R20230531010532/repository</url>
-				</repository>
-<!--				<repository>
-					<id>m2e</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/technology/m2e/snapshots/latest/</url>
-				</repository> -->
-				<repository>
-					<id>mylyn-markdown</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/mylyn/docs/releases/3.0.45/</url>
-				</repository>
-				<repository>
-					<id>lsp4e</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/lsp4e/releases/0.23.0/</url>
-<!--					<url>https://download.eclipse.org/lsp4e/snapshots</url> -->
-				</repository>
-				<repository>
-					<id>tm4e</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/tm4e/releases/0.7.1/</url>
-<!--					<url>https://download.eclipse.org/tm4e/snapshots</url> -->
-				</repository>
-				<repository>
-					<id>wwd</id>
-					<layout>p2</layout>
-					<url>https://download.eclipse.org/wildwebdeveloper/releases/latest/</url>
-<!--					<url>https://download.eclipse.org/wildwebdeveloper/snapshots/</url> -->
-				</repository>
-			</repositories>
-		</profile>
-
 		<profile>
 			<id>e429</id>
 			<properties>
@@ -259,7 +206,7 @@
 				<repository>
 					<id>2023-12</id>
 					<layout>p2</layout>
-					<url>https://download.eclipse.org/staging/2023-12/</url>
+					<url>https://download.eclipse.org/releases/2023-12/</url>
 				</repository>
 				<repository>
 					<id>orbit</id>
@@ -279,6 +226,59 @@
 				<repository>
 					<id>lsp4e</id>
 					<layout>p2</layout>
+<!--					<url>https://download.eclipse.org/lsp4e/releases/0.24.5/</url> -->
+					<url>https://download.eclipse.org/lsp4e/snapshots</url>
+				</repository>
+				<repository>
+					<id>tm4e</id>
+					<layout>p2</layout>
+<!--					<url>https://download.eclipse.org/tm4e/releases/0.8.1/</url> -->
+					<url>https://download.eclipse.org/tm4e/snapshots</url>
+				</repository>
+				<repository>
+					<id>wwd</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/wildwebdeveloper/releases/latest/</url>
+<!--					<url>https://download.eclipse.org/wildwebdeveloper/snapshots/</url> -->
+				</repository>
+			</repositories>
+		</profile>
+
+		<profile>
+			<id>e431</id>
+			<properties>
+				<dist.target>e4.31.0</dist.target>
+				<dist.target.major>e4.31</dist.target.major>
+				<dist.platform.name>2024-03</dist.platform.name>
+				<dist.platform.name.long>2024-03 (4.31)</dist.platform.name.long>
+				<dist.platform.id>2024-03</dist.platform.id>
+				<dist.platform.version>4.31</dist.platform.version>
+				<package.qualifierPrefix>e431</package.qualifierPrefix>
+			</properties>
+			<repositories>
+				<repository>
+					<id>2023-12</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/staging/2024-03/</url>
+				</repository>
+				<repository>
+					<id>orbit</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/2024-03</url>
+				</repository>
+<!--				<repository>
+					<id>m2e</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/technology/m2e/snapshots/latest/</url>
+				</repository> -->
+				<repository>
+					<id>mylyn-markdown</id>
+					<layout>p2</layout>
+					<url>https://download.eclipse.org/mylyn/docs/releases/3.0.45/</url>
+				</repository>
+				<repository>
+					<id>lsp4e</id>
+					<layout>p2</layout>
 <!--					<url>https://download.eclipse.org/lsp4e/releases/0.24.1/</url> -->
 					<url>https://download.eclipse.org/lsp4e/snapshots</url>
 				</repository>
diff --git a/headless-services/jdt-ls-extension/pom.xml b/headless-services/jdt-ls-extension/pom.xml
index 88a673ba7..e8137adb8 100644
--- a/headless-services/jdt-ls-extension/pom.xml
+++ b/headless-services/jdt-ls-extension/pom.xml
@@ -95,9 +95,9 @@
 	<repositories>
 		<!-- composite update site contains http references, using exact https urls instead -->
 		<repository>
-			<id>eclipse-2023-06</id>
+			<id>eclipse-2023-09</id>
 			<layout>p2</layout>
-			<url>https://download.eclipse.org/releases/2023-06</url>
+			<url>https://download.eclipse.org/releases/2023-09</url>
 		</repository>
 
 		<repository>