diff --git a/.github/workflows/prepareRelease.yml b/.github/workflows/prepareRelease.yml
index f67fabda7d3..b7ae2a08f0e 100644
--- a/.github/workflows/prepareRelease.yml
+++ b/.github/workflows/prepareRelease.yml
@@ -31,10 +31,17 @@ jobs:
         java-version: '17'
         distribution: 'temurin'
         cache: maven
+    - name: Store Current Version
+      id: get-current-release
+      run: |
+           mvn help:evaluate -Dexpression=releaseNumberSDK --quiet '-Doutput=releaseNumberSDK-value.txt'
+           streamVersion=$(<releaseNumberSDK-value.txt)
+           rm -f releaseNumberSDK-value.txt
+           echo "version=$(streamVersion)" >> $GITHUB_OUTPUT
     - name: Update Main Versions
       run: mvn -U -ntp -f eclipse-platform-parent org.eclipse.tycho:tycho-versions-plugin:set-version -DnewVersion=${{ github.event.milestone.title }}.0-SNAPSHOT -Dmodules=../eclipse.platform.releng.prereqs.sdk
     - name: Update Release Versions
-      run: mvn -ntp -f eclipse-platform-parent/pom.xml --non-recursive org.eclipse.tycho:tycho-versions-plugin:set-property -Dproperties=releaseVersion,releaseName -DnewReleaseName=${{ steps.get-release-name.outputs.name }} -DnewreleaseVersion=${{ github.event.milestone.title }}
+      run: mvn -ntp -f eclipse-platform-parent/pom.xml --non-recursive org.eclipse.tycho:tycho-versions-plugin:set-property -Dproperties=releaseVersion,releaseName,previousReleaseVersion -DnewPreviousReleaseVersion=${{ steps.get-current-release.outputs.version }} -DnewReleaseName=${{ steps.get-release-name.outputs.name }} -DnewreleaseVersion=${{ github.event.milestone.title }}
     - name: Create Pull Request for Release ${{ github.event.milestone.title }}
       uses: peter-evans/create-pull-request@5e914681df9dc83aa4e4905692ca88beb2f9e91f # v7.0.5
       with:
diff --git a/eclipse-platform-parent/pom.xml b/eclipse-platform-parent/pom.xml
index 17cd40b3fb8..6e849c0412f 100644
--- a/eclipse-platform-parent/pom.xml
+++ b/eclipse-platform-parent/pom.xml
@@ -51,6 +51,7 @@
     -->
     <releaseName>2025-03</releaseName>
     <releaseVersion>4.35</releaseVersion>
+    <previousReleaseVersion>4.34</previousReleaseVersion>
     <!--
       The releaseNumbers below, for SDK and Platform, might be
       thought of as the "marketing number" or "branding number",
diff --git a/eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/resources/label.properties b/eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/resources/label.properties
index 55044df2acd..23c8e8ee7cd 100644
--- a/eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/resources/label.properties
+++ b/eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/resources/label.properties
@@ -5,4 +5,4 @@ buildId=${buildId}
 # such as "4.5" instead of "4.5.0".
 eclipseStream=${releaseNumberSDK}
 # similar for previous release version
-previousReleaseVersion=4.34RC2
\ No newline at end of file
+previousReleaseVersion=${previousReleaseVersion}RC2
\ No newline at end of file