diff --git a/flake.lock b/flake.lock
index 6a9f3c1..9fadd75 100644
--- a/flake.lock
+++ b/flake.lock
@@ -187,6 +187,7 @@
       "original": {
         "owner": "nix-community",
         "repo": "emacs-overlay",
+        "rev": "66f48ac73046a9dab5f896f0bfa5c618b94417cb",
         "type": "github"
       }
     },
diff --git a/flake.nix b/flake.nix
index 31f57da..9f2b068 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,7 +19,7 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
     emacs-overlay = {
-      url = "github:nix-community/emacs-overlay";
+      url = "github:nix-community/emacs-overlay/66f48ac73046a9dab5f896f0bfa5c618b94417cb";
       inputs.nixpkgs-stable.follows = "nixpkgs";
       inputs.nixpkgs.follows = "nixpkgs-unstable";
     };