diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d812456..47dab84 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -59,6 +59,7 @@ jobs:
       - name: Inject version into source files
         run: |
           VERSION=${{ steps.version.outputs.VERSION }}
+          DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
           echo "Injecting version $VERSION from tag $GITHUB_REF_NAME..."
 
           # 1. extension/manifest.base.json
@@ -73,8 +74,22 @@ jobs:
           jq --arg v "$VERSION" '.version = $v' package.json > tmp.json && mv tmp.json package.json
           echo "  ✓ package.json -> $VERSION"
 
+          # 4. website/version.json
+          jq -n --arg v "$VERSION" --arg d "$DATE" '{version: $v, date: $d}' > website/version.json
+          echo "  ✓ website/version.json -> version $VERSION, date $DATE"
+
           echo "Version injection complete."
 
+      - name: Commit and push version updates back to main
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add extension/manifest.base.json shared/constants.js package.json website/version.json
+          git commit -m "chore(release): update versions to $GITHUB_REF_NAME [skip ci]" || echo "No changes to commit"
+          git push origin HEAD:main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Build Extensions
         run: |
           npm install
diff --git a/website/app.js b/website/app.js
index 331df51..b9d3fdf 100644
--- a/website/app.js
+++ b/website/app.js
@@ -209,5 +209,52 @@ document.addEventListener('DOMContentLoaded', () => {
         }
     });
 
+    const updateDynamicVersion = async () => {
+        try {
+            const response = await fetch('version.json');
+            if (!response.ok) return;
+            const data = await response.json();
+            const { version, date } = data;
+            if (!version || !date) return;
+
+            const releaseDate = new Date(date);
+            const now = new Date();
+            const diffMs = now - releaseDate;
+            const diffDays = Math.floor(diffMs / (1000 * 60 * 60 * 24));
+            const diffHours = Math.floor(diffMs / (1000 * 60 * 60));
+            const diffMins = Math.floor(diffMs / (1000 * 60));
+
+            let relativeTimeEn = '';
+            let relativeTimeDe = '';
+
+            if (diffDays > 0) {
+                relativeTimeEn = `${diffDays} ${diffDays === 1 ? 'day' : 'days'} ago`;
+                relativeTimeDe = `vor ${diffDays} ${diffDays === 1 ? 'Tag' : 'Tagen'}`;
+            } else if (diffHours > 0) {
+                relativeTimeEn = `${diffHours} ${diffHours === 1 ? 'hour' : 'hours'} ago`;
+                relativeTimeDe = `vor ${diffHours} ${diffHours === 1 ? 'Stunde' : 'Stunden'}`;
+            } else if (diffMins > 0) {
+                relativeTimeEn = `${diffMins} ${diffMins === 1 ? 'minute' : 'minutes'} ago`;
+                relativeTimeDe = `vor ${diffMins} ${diffMins === 1 ? 'Minute' : 'Minuten'}`;
+            } else {
+                relativeTimeEn = 'just now';
+                relativeTimeDe = 'gerade eben';
+            }
+
+            const badgeEn = document.querySelector('.version-text-en');
+            const badgeDe = document.querySelector('.version-text-de');
+
+            if (badgeEn) {
+                badgeEn.textContent = `v${version} OUT NOW • ${relativeTimeEn}`;
+            }
+            if (badgeDe) {
+                badgeDe.textContent = `v${version} JETZT VERFÜGBAR • ${relativeTimeDe}`;
+            }
+        } catch (e) {
+            console.warn('Failed to fetch dynamic version info:', e);
+        }
+    };
+
     checkInvite();
+    updateDynamicVersion();
 });
diff --git a/website/index.html b/website/index.html
index 8777af9..c415456 100644
--- a/website/index.html
+++ b/website/index.html
@@ -65,7 +65,7 @@
     <header class="hero">
         <div class="container hero-grid">
             <div class="hero-text">
-                <div class="version-badge" data-reveal><span lang="en">v1.3.1 OUT NOW</span><span lang="de">v1.3.1 JETZT VERFÜGBAR</span></div>
+                <div class="version-badge" data-reveal><span lang="en" class="version-text-en">v1.3.1 OUT NOW</span><span lang="de" class="version-text-de">v1.3.1 JETZT VERFÜGBAR</span></div>
                 <h1 data-reveal>
                     <span lang="en">Watch Together.<br>Sync Perfectly.</span>
                     <span lang="de">Gemeinsam schauen.<br>Perfekt synchron.</span>
diff --git a/website/version.json b/website/version.json
new file mode 100644
index 0000000..b73b88f
--- /dev/null
+++ b/website/version.json
@@ -0,0 +1,4 @@
+{
+  "version": "1.3.1",
+  "date": "2026-05-18T13:02:13Z"
+}