diff --git a/pkgs/selfprivacy-graphql-api/default.nix b/pkgs/selfprivacy-graphql-api/default.nix
index d726d1d..b5d22fd 100644
--- a/pkgs/selfprivacy-graphql-api/default.nix
+++ b/pkgs/selfprivacy-graphql-api/default.nix
@@ -23,7 +23,7 @@ let
     , fastapi
     , uvicorn
     }:
-    buildPythonApplication rec {
+    pythonPkgs.buildPythonApplication rec {
       pname = "selfprivacy-graphql-api";
       version = "2.0.0";
       src = builtins.fetchGit {