diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bf85af6..117f16c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,9 +11,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ 21, 25 ]
+        java: [ 25 ]
         os: [ ubuntu-latest, windows-latest, macos-latest ]
-        target: [ 2024-12, 2026-03, canary ]
+        target: [ 2024-12, 2026-09, canary ]
     runs-on: ${{ matrix.os }} 
     name: OS ${{ matrix.os }} Target ${{ matrix.target }} Java ${{ matrix.java }} build and verify
     steps:
diff --git a/releng/org.eclipse.emf.validation.releng/pom.xml b/releng/org.eclipse.emf.validation.releng/pom.xml
index b2c8cd2..b52bd13 100644
--- a/releng/org.eclipse.emf.validation.releng/pom.xml
+++ b/releng/org.eclipse.emf.validation.releng/pom.xml
@@ -12,9 +12,9 @@
 
   <!-- this is the parent POM from which all modules inherit common settings -->
   <properties>
-    <tycho.version>5.0.3</tycho.version>
+    <tycho.version>5.0.4</tycho.version>
     <cbi-plugins.version>1.5.2</cbi-plugins.version>
-    <cyclonedx.version>2.9.2</cyclonedx.version>
+    <cyclonedx.version>2.9.3</cyclonedx.version>
     <maven.test.failure.ignore>false</maven.test.failure.ignore>
     <platform>2024-12</platform>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -78,7 +78,7 @@
         <artifactId>target-platform-configuration</artifactId>
         <version>${tycho.version}</version>
         <configuration>
-          <executionEnvironment>JavaSE-21</executionEnvironment>
+          <executionEnvironment>JavaSE-25</executionEnvironment>
           <!-- add target file content to target platform -->
           <target>
             <artifact>
diff --git a/releng/org.eclipse.emf.validation.releng/promotion/pom.xml b/releng/org.eclipse.emf.validation.releng/promotion/pom.xml
index 56b0011..923b8bc 100644
--- a/releng/org.eclipse.emf.validation.releng/promotion/pom.xml
+++ b/releng/org.eclipse.emf.validation.releng/promotion/pom.xml
@@ -45,7 +45,7 @@ SPDX-License-Identifier: EPL-2.0
         <artifactId>tycho-eclipse-plugin</artifactId>
         <version>${tycho.version}</version>
         <configuration>
-          <executionEnvironment>JavaSE-21</executionEnvironment>
+          <executionEnvironment>JavaSE-25</executionEnvironment>
           <dependencies>
             <dependency>
               <artifactId>org.eclipse.justj.p2</artifactId>
diff --git a/releng/org.eclipse.emf.validation.target/2026-06.target b/releng/org.eclipse.emf.validation.target/2026-06.target
index fbe0be9..c806644 100644
--- a/releng/org.eclipse.emf.validation.target/2026-06.target
+++ b/releng/org.eclipse.emf.validation.target/2026-06.target
@@ -9,18 +9,18 @@
     <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
       <unit id="org.eclipse.sdk.ide" version="0.0.0"/>
       <unit id="org.eclipse.platform.ide" version="0.0.0"/>
-      <repository id="Eclipse-4.40" location="https://download.eclipse.org/eclipse/updates/4.40-I-builds"/>
+      <repository id="Eclipse-4.40" location="https://download.eclipse.org/eclipse/updates/4.40"/>
     </location>
     <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
       <unit id="org.eclipse.emf.edit.feature.group" version="0.0.0"/>
       <unit id="org.eclipse.emf.examples.feature.group" version="0.0.0"/>
       <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
       <unit id="org.eclipse.emf.ecore.edit.feature.group" version="0.0.0"/>
-      <repository id="EMF-2.46" location="https://download.eclipse.org/modeling/emf/emf/builds/milestone/latest"/>
+      <repository id="EMF-2.46" location="https://download.eclipse.org/modeling/emf/emf/builds/release/2.46.0"/>
     </location>
     <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
       <unit id="org.eclipse.ocl.feature.group" version="0.0.0"/>
-      <repository id="OCL-6.23" location="https://download.eclipse.org/modeling/mdt/ocl/builds/milestone/latest"/>
+      <repository id="OCL-6.24" location="https://download.eclipse.org/modeling/mdt/ocl/builds/release/6.24.0"/>
     </location>
   </locations>
 </target>
diff --git a/releng/org.eclipse.emf.validation.target/2026-09.target b/releng/org.eclipse.emf.validation.target/2026-09.target
new file mode 100644
index 0000000..5e4b1c8
--- /dev/null
+++ b/releng/org.eclipse.emf.validation.target/2026-09.target
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?pde?>
+<target name="emf-validation-2026-09" sequenceNumber="1660142140">
+  <locations>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.license.feature.group" version="0.0.0"/>
+      <repository id="Eclipse-Shared-License" location="https://download.eclipse.org/cbi/updates/license"/>
+    </location>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.sdk.ide" version="0.0.0"/>
+      <unit id="org.eclipse.platform.ide" version="0.0.0"/>
+      <repository id="Eclipse-4.41" location="https://download.eclipse.org/eclipse/updates/4.41"/>
+    </location>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.emf.edit.feature.group" version="0.0.0"/>
+      <unit id="org.eclipse.emf.examples.feature.group" version="0.0.0"/>
+      <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
+      <unit id="org.eclipse.emf.ecore.edit.feature.group" version="0.0.0"/>
+      <repository id="EMF-2.47" location="https://download.eclipse.org/modeling/emf/emf/builds/release/2.47.0"/>
+    </location>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.ocl.feature.group" version="0.0.0"/>
+      <repository id="OCL-6.24" location="https://download.eclipse.org/modeling/mdt/ocl/builds/release/6.24.0"/>
+    </location>
+  </locations>
+</target>
diff --git a/releng/org.eclipse.emf.validation.target/2026-12.target b/releng/org.eclipse.emf.validation.target/2026-12.target
new file mode 100644
index 0000000..809a6d2
--- /dev/null
+++ b/releng/org.eclipse.emf.validation.target/2026-12.target
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?pde?>
+<target name="emf-validation-2026-12" sequenceNumber="1660142140">
+  <locations>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.license.feature.group" version="0.0.0"/>
+      <repository id="Eclipse-Shared-License" location="https://download.eclipse.org/cbi/updates/license"/>
+    </location>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.sdk.ide" version="0.0.0"/>
+      <unit id="org.eclipse.platform.ide" version="0.0.0"/>
+      <repository id="Eclipse" location="https://download.eclipse.org/eclipse/updates/4.42-I-builds"/>
+    </location>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.emf.edit.feature.group" version="0.0.0"/>
+      <unit id="org.eclipse.emf.examples.feature.group" version="0.0.0"/>
+      <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
+      <unit id="org.eclipse.emf.ecore.edit.feature.group" version="0.0.0"/>
+      <repository id="EMF" location="https://download.eclipse.org/modeling/emf/emf/builds/milestone/latest"/>
+    </location>
+    <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
+      <unit id="org.eclipse.ocl.feature.group" version="0.0.0"/>
+      <repository id="OCL" location="https://download.eclipse.org/modeling/mdt/ocl/builds/milestone/latest"/>
+    </location>
+  </locations>
+</target>