diff --git a/krebs/5pkgs/override/default.nix b/krebs/5pkgs/override/default.nix
deleted file mode 100644
index 704831823..000000000
--- a/krebs/5pkgs/override/default.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-with import <stockholm/lib>;
-self: super: {
-
-  exim = super.exim.overrideAttrs (old: rec {
-    name = warnOldVersion old.name "exim-4.92.2";
-    src = self.fetchurl {
-      url = "https://ftp.exim.org/pub/exim/exim4/${name}.tar.xz";
-      sha256 = "0m56jsh2fzvwj4rdpcc3pkd5vsi40cjrpzalis7l1zq33m4axmq1";
-    };
-  });
-
-}