diff --git a/flake.lock b/flake.lock
index 68c9f694..633586e6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -48,16 +48,17 @@
         ]
       },
       "locked": {
-        "lastModified": 1722391647,
-        "narHash": "sha256-JTi7l1oxnatF1uX/gnGMlRnyFMtylRw4MqhCUdoN2K4=",
+        "lastModified": 1721441897,
+        "narHash": "sha256-gYGX9/22tPNeF7dR6bWN5rsrpU4d06GnQNNgZ6ZiXz0=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "0fd4a5d2098faa516a9b83022aec7db766cd1de8",
+        "rev": "b7996075da11a2d441cfbf4e77c2939ce51506fd",
         "type": "github"
       },
       "original": {
         "owner": "oxalica",
         "repo": "rust-overlay",
+        "rev": "b7996075da11a2d441cfbf4e77c2939ce51506fd",
         "type": "github"
       }
     },
diff --git a/flake.nix b/flake.nix
index c6a11b0a..63132be4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,7 +3,7 @@
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     flake-utils.url = "github:numtide/flake-utils";
     rust-overlay = {
-      url = "github:oxalica/rust-overlay";
+      url = "github:oxalica/rust-overlay/b7996075da11a2d441cfbf4e77c2939ce51506fd"; # FIX: pin to a specific commit until cargo-c is updated
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };