diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e41d5db..41f8bc29 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -192,7 +192,7 @@ jobs:
           toolchain: nightly-2026-03-20
           # ^ sync with https://github.com/awslabs/cargo-check-external-types/blob/main/rust-toolchain.toml
       - name: Install cargo-check-external-types
-        uses: taiki-e/cache-cargo-install-action@v3
+        uses: taiki-e/cache-cargo-install-action@v3.0.7
         with:
           tool: cargo-check-external-types
       - name: run cargo-check-external-types