diff --git a/configuration.nix b/configuration.nix
index f62669c..a9a8e7a 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -27,6 +27,11 @@ in
     # ./resources/limits.nix
   ];
 
+  # We have to use this version to be able to migrate from Gitea.
+  nixpkgs.config.permittedInsecurePackages = [
+    "forgejo-1.20.6-1-unstable-2024-04-18"
+  ];
+
   fileSystems."/".options = [ "noatime" ];
 
   services.selfprivacy-api.enable = true;