diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index cbb6abe9daa8..a24b4d74ac9f 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -632,12 +632,6 @@ self: super: {
   # 2022-03-19: Testsuite is failing: https://github.com/puffnfresh/haskell-jwt/issues/2
   jwt = dontCheck super.jwt;
 
-  # 2022-03-16: ghc 9 support has not been merged: https://github.com/hasura/monad-validate/pull/5
-  monad-validate = appendPatch (fetchpatch {
-    url = "https://github.com/hasura/monad-validate/commit/7ba916e23c219a8cd397e2a1801c74682b52fcf0.patch";
-    sha256 = "sha256-udJ+/2VvfWA5Bm36nftH0sbPNuMkWj8rCh9cNN2f9Zw=";
-  }) (dontCheck super.monad-validate);
-
   # Build the latest git version instead of the official release. This isn't
   # ideal, but Chris doesn't seem to make official releases any more.
   structured-haskell-mode = overrideCabal (drv: {