diff --git a/pkgs/development/tools/cachix/default.nix b/pkgs/development/tools/cachix/default.nix
index 58a0da813f7..b6098ca98bf 100644
--- a/pkgs/development/tools/cachix/default.nix
+++ b/pkgs/development/tools/cachix/default.nix
@@ -1,8 +1,6 @@
 { haskellPackages, haskell }:
 
-haskell.lib.justStaticExecutables (haskellPackages.override {
-  overrides = self: super: {
+haskell.lib.justStaticExecutables (haskellPackages.extend (self: super: {
     cachix = haskell.lib.doDistribute (self.cachix_0_2_1 or self.cachix);
     cachix-api = self.cachix-api_0_2_1 or self.cachix-api;
-  };
-}).cachix
+})).cachix