diff --git a/.github/workflows/contracts.yml b/.github/workflows/contracts.yml
index 64cc058536..5e65519da8 100644
--- a/.github/workflows/contracts.yml
+++ b/.github/workflows/contracts.yml
@@ -72,7 +72,8 @@ jobs:
           git diff
 
       - name: Build diff-test
-        # workaround for `gcc: error: unrecognized command-line option '-fuse-ld=/nix/store/b7hb6xpazdnidp0s87fain2im6lk4f4r-mold-2.30.0/bin/mold'`
+        # workaround for `gcc: error: unrecognized command-line option '-fuse-ld=/nix/store/b7hb6xpazdnidp0s87fain2im6lk4f4r-mold-2.30.0/bin/mold'`.
+        # my best guess is that a nested dependency of `libc` crate requires an antiquated version of gcc
         # https://github.com/EspressoSystems/espresso-sequencer/actions/runs/10062088424/job/27813743953
         env:
           CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER: "clang"