diff --git a/Jenkinsfile b/Jenkinsfile
index 5b3572b..11e156e 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -14,7 +14,7 @@
         timestamps ()
     }
     environment {
-        TRAIN_NAME = "2023-09"
+        TRAIN_NAME = "2023-12"
         STAGING_DIR = "/home/data/httpd/download.eclipse.org/staging/${TRAIN_NAME}"
     }
     parameters {
diff --git a/Jenkinsfile-oomph-report b/Jenkinsfile-oomph-report
index 3180143..bd74103 100644
--- a/Jenkinsfile-oomph-report
+++ b/Jenkinsfile-oomph-report
@@ -2,7 +2,7 @@
 
 // When the parameters change, this should be increased so that the build does nothing other than update the parameters used for the next build.
 def pipelineVersion = '1'
-def trainLocation = 'staging/2023-03'
+def trainLocation = 'staging/2023-12'
 
 pipeline {
   agent {
diff --git a/Jenkinsfile-reporeports b/Jenkinsfile-reporeports
index f4a86ab..9ed69a4 100644
--- a/Jenkinsfile-reporeports
+++ b/Jenkinsfile-reporeports
@@ -13,7 +13,7 @@
         timeout(time: 2, unit: 'HOURS')
     }
     environment {
-        TRAIN_NAME = "2023-09"
+        TRAIN_NAME = "2023-12"
         STAGING_DIR = "/home/data/httpd/download.eclipse.org/staging/${TRAIN_NAME}"
     }
     stages {
diff --git a/pom.xml b/pom.xml
index 3f3757c..0d65335 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,10 +7,10 @@
   <packaging>pom</packaging>
   <properties>
     <tycho-version>2.7.5</tycho-version>
-    <trainName>2023-09</trainName>
-    <referenceRepo>2023-06/202306141000</referenceRepo>
+    <trainName>2023-12</trainName>
+    <referenceRepo>releases/2023-09/202309131000</referenceRepo>
     <download.eclipse.org>https://download.eclipse.org</download.eclipse.org>
-    <eclipse.repo.url>https://download.eclipse.org/eclipse/updates/4.28/R-4.28-202306050440</eclipse.repo.url>
+    <eclipse.repo.url>https://download.eclipse.org/eclipse/updates/4.29/R-4.29-202309031000</eclipse.repo.url>
     <simrel.aggregator.repo.url.relative>nightly/latest</simrel.aggregator.repo.url.relative>
     <simrel.aggregator.repo.url>${download.eclipse.org}/cbi/updates/p2-aggregator/products/${simrel.aggregator.repo.url.relative}</simrel.aggregator.repo.url>
     <cbi.analyzers.repo.url>${download.eclipse.org}/cbi/updates/p2-analyzers/products/nightly/latest</cbi.analyzers.repo.url>
diff --git a/simrel.aggr b/simrel.aggr
index 519e87d..df5f2b0 100644
--- a/simrel.aggr
+++ b/simrel.aggr
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="ASCII"?>
-<aggregator:Aggregation xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:aggregator="http://www.eclipse.org/cbi/p2repo/2011/aggregator/1.1.0" description="Aggregation files used for Simultaneous Release (quarterly &quot;release train&quot;)." buildmaster="//@contacts[email='ed.merks@gmail.com']" buildmasterBackup="//@contacts[email='frederic.gurr@eclipse.org']" label="2023-09" buildRoot="buildresults" packedStrategy="UNPACK_AS_SIBLING" sendmail="true" type="I" allowLegacySites="false">
+<aggregator:Aggregation xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:aggregator="http://www.eclipse.org/cbi/p2repo/2011/aggregator/1.1.0" description="Aggregation files used for Simultaneous Release (quarterly &quot;release train&quot;)." buildmaster="//@contacts[email='ed.merks@gmail.com']" buildmasterBackup="//@contacts[email='frederic.gurr@eclipse.org']" label="2023-12" buildRoot="buildresults" packedStrategy="UNPACK_AS_SIBLING" sendmail="true" type="I" allowLegacySites="false">
   <validationSets label="main">
     <contributions href="ep.aggrcon#/"/>
     <contributions href="emf-emf.aggrcon#/"/>