diff --git a/shell.nix b/shell.nix
index 7b3fd32e9..48d9cc57e 100644
--- a/shell.nix
+++ b/shell.nix
@@ -9,7 +9,7 @@ let
 
   haskellPackages = pkgs.haskellPackages;
 
-  oauth2Flake = (builtins.getFlake "git+https://gitlab.uniworx.de/mosbach/oauth2-mock-server/?rev=45debf40cd171f78a4de38f608a6cfd3be73b91a&ref=oidc").packages.x86_64-linux;
+  oauth2Flake = (builtins.getFlake "git+https://gitlab.uniworx.de/mosbach/oauth2-mock-server/?rev=83d99e55303f5b1cd6cde30b2936d61419268f8c&ref=oidc").packages.x86_64-linux;
 
 
   oauth2MockServer = oauth2Flake.default;