diff --git a/index.html b/index.html
index ab29c59..475e9ab 100644
--- a/index.html
+++ b/index.html
@@ -72,7 +72,7 @@
     </section>
   </main>
   <footer id="version-footer">Frontend <span id="frontend-version">__FRONTEND_VERSION__</span> · API <span id="api-version">hämtar version…</span></footer>
-  <script src="/voice.js"></script>
+  <script src="/voice.js?v=__FRONTEND_VERSION__"></script>
   <script>
     const auth = document.querySelector('#auth');
     const play = document.querySelector('#play');
diff --git a/nginx/default.conf b/nginx/default.conf
index f769b9c..504b0cb 100644
--- a/nginx/default.conf
+++ b/nginx/default.conf
@@ -10,7 +10,9 @@ server {
     }
 
     location / {
-        add_header Cache-Control "no-cache" always;
+        add_header Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0" always;
+        add_header Pragma "no-cache" always;
+        add_header Expires "0" always;
         try_files $uri $uri/ /index.html;
     }
 }
diff --git a/scripts/check-frontend.sh b/scripts/check-frontend.sh
index 660d3fb..8f152c2 100755
--- a/scripts/check-frontend.sh
+++ b/scripts/check-frontend.sh
@@ -4,6 +4,8 @@ set -euo pipefail
 test -s index.html
 grep -q '<html lang="sv">' index.html
 grep -q 'id="frontend-version">__FRONTEND_VERSION__' index.html
+grep -q '<script src="/voice.js?v=__FRONTEND_VERSION__"></script>' index.html
+grep -q 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0' nginx/default.conf
 grep -q "request('/version')" index.html
 grep -Fq "credentials: 'same-origin'" index.html
 grep -q 'id="dialogue" aria-label="Dialoghistorik" role="log" aria-live="polite"' index.html