diff --git a/overlays/khal.nix b/overlays/khal.nix
deleted file mode 100644
index dcc1beb7..00000000
--- a/overlays/khal.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-final: prev: {
-  khal = prev.khal.overrideAttrs (old: {
-    src = prev.fetchFromGitHub {
-      rev = "a270656b4754329a0e76e72a473307548c18afb8";
-      owner = "pimutils";
-      repo = "khal";
-      hash = "sha256-LwwaCGl4NFG4dJuvr75ZfFZMX2ivwLg1Z8eQcjaLtwI=";
-    };
-    SETUPTOOLS_SCM_PRETEND_VERSION = "unstable-2022-06-14";
-    doInstallCheck = false;
-  });
-}