diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index fb316fbbb0fd..9f973b6902cc 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -2051,28 +2051,6 @@ self: super: {
   # test suite doesn't compile anymore due to changed hunit/tasty APIs
   fullstop = dontCheck super.fullstop;
 
-  crypton-x509 =
-    lib.pipe
-      super.crypton-x509
-      [
-        # Mistype in a dependency in a test.
-        # https://github.com/kazu-yamamoto/crypton-certificate/pull/3
-        (appendPatch
-          (fetchpatch {
-            name = "crypton-x509-rename-dep.patch";
-            url = "https://github.com/kazu-yamamoto/crypton-certificate/commit/5281ff115a18621407b41f9560fd6cd65c602fcc.patch";
-            hash = "sha256-pLzuq+baSDn+MWhtYIIBOrE1Js+tp3UsaEZy5MhWAjY=";
-            relative = "x509";
-          })
-        )
-        # There is a revision in crypton-x509, so the above patch won't
-        # apply because of line endings in revised .cabal files.
-        (overrideCabal {
-           editedCabalFile = null;
-           revision = null;
-        })
-      ];
-
   # * doctests don't work without cabal
   #   https://github.com/noinia/hgeometry/issues/132
   # * Too strict version bound on vector-builder