diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cefb111..45b169b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,6 +13,12 @@ jobs:
           - stable
           - beta
           - nightly
+          - nightly-2024-10-21 # FIXME: unpin this
+        exclude:
+          - os: ubuntu-latest
+            rust: nightly-2024-10-21
+          - os: freebsd-latest
+            rust: nightly
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4