diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJ17/mavenTychoJ17.parent/mavenTychoJ17.target/mavenTychoJ17.target.target b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJ17/mavenTychoJ17.parent/mavenTychoJ17.target/mavenTychoJ17.target.target
index 432ba213e31..aa9338e5595 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJ17/mavenTychoJ17.parent/mavenTychoJ17.target/mavenTychoJ17.target.target
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJ17/mavenTychoJ17.parent/mavenTychoJ17.target/mavenTychoJ17.target.target
@@ -8,7 +8,7 @@
 			<unit id="org.eclipse.pde.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.draw2d.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
-			<repository location="https://download.eclipse.org/releases/2023-09"/>
+			<repository location="https://download.eclipse.org/releases/2023-12"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<unit id="org.eclipse.emf.mwe2.launcher.feature.group" version="0.0.0"/>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J17/mavenTychoP2J17.parent/mavenTychoP2J17.target/mavenTychoP2J17.target.target b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J17/mavenTychoP2J17.parent/mavenTychoP2J17.target/mavenTychoP2J17.target.target
index 9039fc7f5c5..d06ce9fe180 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J17/mavenTychoP2J17.parent/mavenTychoP2J17.target/mavenTychoP2J17.target.target
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J17/mavenTychoP2J17.parent/mavenTychoP2J17.target/mavenTychoP2J17.target.target
@@ -8,7 +8,7 @@
 			<unit id="org.eclipse.pde.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.draw2d.feature.group" version="0.0.0"/>
 			<unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
-			<repository location="https://download.eclipse.org/releases/2023-09"/>
+			<repository location="https://download.eclipse.org/releases/2023-12"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<unit id="org.eclipse.emf.mwe2.launcher.feature.group" version="0.0.0"/>
diff --git a/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/tp/domainmodel.target b/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/tp/domainmodel.target
index 59abc94a575..ea8434544a3 100644
--- a/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/tp/domainmodel.target
+++ b/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/tp/domainmodel.target
@@ -23,7 +23,7 @@
         Just mention the p2 repo so that additional requirements with ranges specified in
         features and bundles are taken from Orbit (e.g., objectweb.asm)
       -->
-      <repository location="https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/2023-09"/>
+      <repository location="https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/2023-12"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.xtend b/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.xtend
index 42d5bd6e8f7..ea2fd337d77 100644
--- a/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.xtend
+++ b/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.xtend
@@ -62,7 +62,7 @@ class TargetPlatformProject extends ProjectDescriptor {
 					<unit id="org.eclipse.draw2d.feature.group" version="0.0.0"/>
 					<unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
 					�IF config.javaVersion.isAtLeast(JavaVersion.JAVA17)�
-						<repository location="https://download.eclipse.org/releases/2023-09"/>
+						<repository location="https://download.eclipse.org/releases/2023-12"/>
 					�ELSE�
 						<repository location="https://download.eclipse.org/releases/2023-03"/>
 					�ENDIF�
diff --git a/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.java b/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.java
index 01cbc478c9e..d129b93e459 100644
--- a/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.java
+++ b/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/TargetPlatformProject.java
@@ -112,7 +112,7 @@ public CharSequence target() {
       boolean _isAtLeast = this.getConfig().getJavaVersion().isAtLeast(JavaVersion.JAVA17);
       if (_isAtLeast) {
         _builder.append("\t\t\t");
-        _builder.append("<repository location=\"https://download.eclipse.org/releases/2023-09\"/>");
+        _builder.append("<repository location=\"https://download.eclipse.org/releases/2023-12\"/>");
         _builder.newLine();
       } else {
         _builder.append("\t\t\t");
diff --git a/xtext-latest.target b/xtext-latest.target
index 0c19f578aa0..dde8daa4d22 100644
--- a/xtext-latest.target
+++ b/xtext-latest.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-latest" sequenceNumber="5">
+<target name="xtext-latest" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
@@ -21,7 +21,7 @@
 			<unit id="org.eclipse.emf.mwe2.runtime" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
-			<repository location="https://download.eclipse.org/releases/2023-09/"/>
+			<repository location="https://download.eclipse.org/releases/2023-12/"/>
 			<unit id="org.eclipse.draw2d.feature.group" version="0.0.0" />
 			<unit id="org.eclipse.m2e.feature.feature.group" version="0.0.0" />
 			<unit id="org.eclipse.buildship.feature.group" version="0.0.0" />
diff --git a/xtext-r202203.target b/xtext-r202203.target
index 4b2e1fc27eb..9457c6f21d7 100644
--- a/xtext-r202203.target
+++ b/xtext-r202203.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202203" sequenceNumber="5">
+<target name="xtext-r202203" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
diff --git a/xtext-r202206.target b/xtext-r202206.target
index e28e2d4068d..07ad4a42822 100644
--- a/xtext-r202206.target
+++ b/xtext-r202206.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202206" sequenceNumber="5">
+<target name="xtext-r202206" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
diff --git a/xtext-r202209.target b/xtext-r202209.target
index 56593e73cc1..3fa4a099801 100644
--- a/xtext-r202209.target
+++ b/xtext-r202209.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202209" sequenceNumber="5">
+<target name="xtext-r202209" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
diff --git a/xtext-r202212.target b/xtext-r202212.target
index ccfcdf0773b..aa431ec83b6 100644
--- a/xtext-r202212.target
+++ b/xtext-r202212.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202212" sequenceNumber="5">
+<target name="xtext-r202212" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
diff --git a/xtext-r202303.target b/xtext-r202303.target
index 7228345d5db..5483c5ae6c0 100644
--- a/xtext-r202303.target
+++ b/xtext-r202303.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202303" sequenceNumber="5">
+<target name="xtext-r202303" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
diff --git a/xtext-r202306.target b/xtext-r202306.target
index 8afc5a918ce..089841afbff 100644
--- a/xtext-r202306.target
+++ b/xtext-r202306.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202306" sequenceNumber="5">
+<target name="xtext-r202306" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>
diff --git a/xtext-r202309.target b/xtext-r202309.target
index 41bb0588a7e..71528dc8d44 100644
--- a/xtext-r202309.target
+++ b/xtext-r202309.target
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="xtext-r202309" sequenceNumber="5">
+<target name="xtext-r202309" sequenceNumber="6">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/"/>