diff --git a/prosody/appimage_aarch64.yml b/prosody/appimage_aarch64.yml
index 77211388..a06fca9a 100644
--- a/prosody/appimage_aarch64.yml
+++ b/prosody/appimage_aarch64.yml
@@ -33,6 +33,7 @@ AppDir:
       - sourceline: 'deb [arch=arm64] https://deb.debian.org/debian/ bullseye main contrib'
         key_url: 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x648ACFD622F3D138'
       - sourceline: 'deb [arch=arm64] https://deb.debian.org/debian/ bullseye-backports main contrib'
+        key_url: 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x0E98404D386FA1D9'
 
     include:
       - lua5.2
diff --git a/prosody/appimage_x86_64.yml b/prosody/appimage_x86_64.yml
index aa539b51..35ed94e8 100644
--- a/prosody/appimage_x86_64.yml
+++ b/prosody/appimage_x86_64.yml
@@ -30,7 +30,7 @@ AppDir:
       - sourceline: 'deb [arch=amd64] https://deb.debian.org/debian/ bullseye main contrib'
         key_url: 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x648ACFD622F3D138'
       - sourceline: 'deb [arch=amd64] https://deb.debian.org/debian/ bullseye-backports main contrib'
-
+        key_url: 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x0E98404D386FA1D9'
     include:
       - lua5.2
       # lua-unbound is needed