diff --git a/dist/manifest_firefox.json b/dist/manifest_firefox.json
index 5eaf8a3..f35c3ee 100644
--- a/dist/manifest_firefox.json
+++ b/dist/manifest_firefox.json
@@ -38,6 +38,7 @@
             "background/client.js",
             "background/keepass.js",
             "background/httpauth.js",
+            "background/offscreen.js",
             "background/browserAction.js",
             "background/page.js",
             "background/event.js",
diff --git a/keepassxc-browser/manifest.json b/keepassxc-browser/manifest.json
index e82c346..53efa26 100755
--- a/keepassxc-browser/manifest.json
+++ b/keepassxc-browser/manifest.json
@@ -40,6 +40,7 @@
             "background/client.js",
             "background/keepass.js",
             "background/httpauth.js",
+            "background/offscreen.js",
             "background/browserAction.js",
             "background/page.js",
             "background/event.js",