diff --git a/flake.lock b/flake.lock
index 42e1782..7c4e982 100644
--- a/flake.lock
+++ b/flake.lock
@@ -270,6 +270,18 @@
         "type": "indirect"
       }
     },
+    "melpa2nix-patch": {
+      "flake": false,
+      "locked": {
+        "narHash": "sha256-19bZ5w/81o7gmeGj/ePw6BQiFQqT4JOVtmLpivgPbyc=",
+        "type": "file",
+        "url": "https://patch-diff.githubusercontent.com/raw/NixOS/nixpkgs/pull/276943.patch"
+      },
+      "original": {
+        "type": "file",
+        "url": "https://patch-diff.githubusercontent.com/raw/NixOS/nixpkgs/pull/276943.patch"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1704842529,
@@ -308,6 +320,7 @@
         "emacs-snapshot": "emacs-snapshot",
         "flake-compat": "flake-compat",
         "flake-utils": "flake-utils",
+        "melpa2nix-patch": "melpa2nix-patch",
         "nixpkgs": "nixpkgs"
       }
     },
diff --git a/flake.nix b/flake.nix
index 80ab2e6..f435515 100644
--- a/flake.nix
+++ b/flake.nix
@@ -25,6 +25,8 @@
     "emacs-29-1" = { url = "https://ftp.gnu.org/gnu/emacs/emacs-29.1.tar.xz"; flake = false; };
     emacs-snapshot = { url = "github:emacs-mirror/emacs"; flake = false; };
     emacs-release-snapshot = { url = "github:emacs-mirror/emacs?ref=emacs-29"; flake = false; };
+
+    melpa2nix-patch = { url = "https://patch-diff.githubusercontent.com/raw/NixOS/nixpkgs/pull/276943.patch"; flake = false; };
   };
 
   nixConfig = {
@@ -93,9 +95,16 @@
     checks = builtins.mapAttrs
       (system:
         builtins.mapAttrs (_name: ciEmacs:
-          nixpkgs.legacyPackages.${system}.callPackage ./tests {
-            inherit ciEmacs;
-          })
+              let
+                patchedNixpkgs = system: import (nixpkgs.legacyPackages.${system}.applyPatches {
+                  name = "nixpkgs-patched";
+                  src = nixpkgs;
+                  patches = inputs.melpa2nix-patch;
+                }) { inherit system; };
+                in
+                (patchedNixpkgs system).callPackage ./tests {
+                  inherit ciEmacs;
+                })
       )
       self.packages;