diff --git a/.ci/AppImageBuilder.yml b/.ci/AppImageBuilder.yml
index fb2482491..9b2c7dd04 100644
--- a/.ci/AppImageBuilder.yml
+++ b/.ci/AppImageBuilder.yml
@@ -28,11 +28,11 @@ AppDir:
     arch: !ENV '${arch_deb}'
     sources:
     - sourceline: 'deb http://deb.debian.org/debian bullseye main'
-      key_url: 'https://ftp-master.debian.org/keys/archive-key-11.asc'
+      key_url: 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x1f89983e0081fde018f3cc9673a4f27b8dd47936'
     - sourceline: 'deb http://security.debian.org/debian-security bullseye-security main'
-      key_url: 'https://ftp-master.debian.org/keys/archive-key-11.asc'
+      key_url: 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x1f89983e0081fde018f3cc9673a4f27b8dd47936'
     - sourceline: 'deb http://deb.debian.org/debian bullseye-updates main'
-      key_url: 'https://ftp-master.debian.org/keys/archive-key-11-security.asc'
+      key_url: 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xac530d520f2f3269f5e98313a48449044aad5c5d'
     include:
     - libevdev2
     - libfluidsynth2