diff --git a/default.nix b/default.nix
index ac4596d..a3ca341 100644
--- a/default.nix
+++ b/default.nix
@@ -1,3 +1,3 @@
 { pkgs ? import <nixpkgs> {}}:
 
-pkgs.haskell.packages.ghc822.callPackage ./twidlk.nix { }
+pkgs.haskell.packages.ghc865.callPackage ./twidlk.nix { }