diff --git a/.github/workflows/trigger_new_builds.yml b/.github/workflows/trigger_new_builds.yml
index 42d75b4..84fb22c 100644
--- a/.github/workflows/trigger_new_builds.yml
+++ b/.github/workflows/trigger_new_builds.yml
@@ -54,12 +54,61 @@ jobs:
           fi
           echo "result=$result" >> $GITHUB_OUTPUT
 
+  # This job compares the currently used php version in the docker images
+  # with the latests php release available @ https://www.php.net/releases/?json&version=X.Y
+  # If different, a rebuilt will be triggered.
+  php-new-release:
+    # Completely avoid forks and pull requests to try this job.
+    if: github.repository_owner == 'moodlehq' && contains(fromJson('["workflow_dispatch"]'), github.event_name)
+    runs-on: ubuntu-latest
+
+    outputs:
+      trigger_build: ${{ steps.calculate.outputs.result }}
+      docker_tag: ${{ steps.calculate.outputs.tag }}
+
+    steps:
+
+      - name: Configuring git vars
+        uses: rlespinasse/github-slug-action@v4
+
+      - name: Compare current and latest php versions
+        id: calculate
+        run: |
+          # Calculate current image version
+          # If the branch has has X.Y-xxxxx format, use it as docker tag. Else, use "dev" image (master branch).
+          tag=dev
+          if [[ "${{ env.GITHUB_REF_SLUG }}" =~ [0-9]+\.[0-9]+\-[a-z]+ ]]; then
+              tag=${{ env.GITHUB_REF_SLUG }}
+          fi
+          echo "LOG: docker tag: $tag"
+          echo "tag=$tag" >> $GITHUB_OUTPUT
+
+          # Extract the php version from the image.
+          current=$(docker run -t --rm moodlehq/moodle-php-apache:$tag php -r 'echo PHP_VERSION;')
+          echo "LOG: current: $current"
+
+          # Look for the latest version available @ https://www.php.net/releases/?json&version=X.Y-whatever
+          latest=$(curl -s "https://www.php.net/releases/?json&version=$tag" | jq -r '.version' || true)
+          echo "LOG: latest: $latest"
+
+          # Compare the versions (digits only), if current < latest, then we need to rebuild.
+          # (but only if it's not an alpha, beta, rc version, aka, only if it's a pure numerical version)
+          result='false'
+          if [[ ! $current =~ ^[0-9\.]+$ ]]; then
+              echo "LOG: current version ($current) is not stable, skipping"
+          elif [[ ${current//[!0-9]/} -lt ${latest//[!0-9]/} ]]; then
+              result='true'
+              echo "LOG: new php release to trigger image build"
+          fi
+          echo "result=$result" >> $GITHUB_OUTPUT
+
+
   # This job gets the results of all the jobs in the workflow and,
   # if any of them has ended with the "trigger_build" output set, then
   # will set its own (final) trigger_build output to 'true'.
   evaluate-results:
     runs-on: ubuntu-latest
-    needs: [datetimedb-new-release]
+    needs: [datetimedb-new-release, php-new-release]
 
     outputs:
       trigger_build: ${{ steps.evaluate.outputs.result }}
@@ -72,7 +121,8 @@ jobs:
         run: |
           # Add here more conditions (ORed) when new criteria are added.
           result=false
-          if [[ "${{ needs.datetimedb-new-release.outputs.trigger_build }}" == "true" ]]; then
+          if [[ "${{ needs.datetimedb-new-release.outputs.trigger_build }}" == "true" ]] ||
+             [[ "${{ needs.php-new-release.outputs.trigger_build }}" == "true" ]]; then
               result=true
               echo "LOG: Final evaluation, trigger the build"
           fi