diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a5df3e9ec..0d011cd84 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -128,7 +128,7 @@ jobs:
         run: ./gradlew :stirling-pdf:generateOpenApiDocs
         env:
           DISABLE_ADDITIONAL_FEATURES: true
-      
+
       - name: Upload OpenAPI Documentation
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
@@ -147,8 +147,8 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
-          node-version: '22'
-          cache: 'npm'
+          node-version: "22"
+          cache: "npm"
           cache-dependency-path: frontend/package-lock.json
       - name: Install frontend dependencies
         run: cd frontend && npm ci
@@ -167,6 +167,100 @@ jobs:
           path: frontend/dist/
           retention-days: 3
 
+  sync-versions:
+    if: needs.files-changed.outputs.build == 'true'
+    needs: [files-changed, build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        with:
+          egress-policy: audit
+
+      - name: Checkout repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          fetch-depth: 0
+
+      - name: Setup GitHub App Bot
+        id: setup-bot
+        uses: ./.github/actions/setup-bot
+        with:
+          app-id: ${{ secrets.GH_APP_ID }}
+          private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5.0.0
+        with:
+          java-version: "21"
+          distribution: "temurin"
+          cache: gradle
+
+      - name: Run version sync
+        run: ./gradlew syncAppVersion
+
+      - name: Check if version files have changed
+        id: git-check
+        run: |
+          if [[ -n $(git status --porcelain) ]]; then
+            echo "changes=true" >> $GITHUB_OUTPUT
+          else
+            echo "changes=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Post comment on PR
+        if: steps.git-check.outputs.changes == 'true' && github.event_name != 'workflow_dispatch'
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          github-token: ${{ steps.setup-bot.outputs.token }}
+          script: |
+            const { GITHUB_REPOSITORY } = process.env;
+            const [repoOwner, repoName] = GITHUB_REPOSITORY.split('/');
+            const issueNumber = context.issue.number;
+
+            // Find existing comment
+            const comments = await github.rest.issues.listComments({
+              owner: repoOwner,
+              repo: repoName,
+              issue_number: issueNumber
+            });
+
+            const comment = comments.data.find(c => c.body.includes("## ⚠️ Version Differences"));
+
+            const commentBody = `## ⚠️ Version Differences
+
+            The versions in the following files do not match the version defined in \`build.gradle\`.
+
+            Running \`./gradlew syncAppVersion\` or \`./gradlew build\` will automatically update these files:
+
+            \`frontend/src-tauri/tauri.conf.json\`, \`frontend/src/proprietary/testing/serverExperienceSimulations.ts\`, \`frontend/src/core/testing/serverExperienceSimulations.ts\`
+
+            Please run \`./gradlew syncAppVersion\` or \`./gradlew build\`!`;
+
+            // Only update or create comments by the action user
+            const expectedActor = "${{ steps.setup-bot.outputs.app-slug }}[bot]";
+
+            if (comment && comment.user.login === expectedActor) {
+              // Update existing comment
+              await github.rest.issues.updateComment({
+                owner: repoOwner,
+                repo: repoName,
+                comment_id: comment.id,
+                body: commentBody
+              });
+              console.log("Updated existing comment.");
+            } else if (!comment) {
+              // Create new comment if no existing comment is found
+              await github.rest.issues.createComment({
+                owner: repoOwner,
+                repo: repoName,
+                issue_number: issueNumber,
+                body: commentBody
+              });
+            } else {
+              console.log("Comment update attempt denied. Actor does not match.");
+            }
+
   check-licence:
     if: needs.files-changed.outputs.build == 'true'
     needs: [files-changed, build]
@@ -241,7 +335,7 @@ jobs:
         uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.12"
-          cache: 'pip' # caching pip dependencies
+          cache: "pip" # caching pip dependencies
           cache-dependency-path: ./testing/cucumber/requirements.txt
 
       - name: Pip requirements
diff --git a/build.gradle b/build.gradle
index 17bcdb878..bb60f0114 100644
--- a/build.gradle
+++ b/build.gradle
@@ -397,4 +397,4 @@ tasks.register('buildRestartHelper', Jar) {
     doLast {
         println "restart-helper.jar created at: ${destinationDirectory.get()}/restart-helper.jar"
     }
-}
+}
\ No newline at end of file