diff --git a/systems/kuraokami/default.nix b/systems/kuraokami/default.nix
index dfd6cbd..648f352 100644
--- a/systems/kuraokami/default.nix
+++ b/systems/kuraokami/default.nix
@@ -58,7 +58,7 @@
     };
     postgresql = {
       enable = true;
-      extraPlugins = ps: with ps; [ pg_libversion ];
+      extensions = ps: with ps; [ pg_libversion ];
       enableTCPIP = true;
       initialScript = pkgs.writeText "backend-initScript" ''
         CREATE DATABASE repology