diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 4999981..8be4537 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -106,7 +106,7 @@ jobs:
         with:
           toolchain: stable
       - name: cargo install cargo-hack
-        uses: taiki-e/install-action@e797ba6a25dbd8669057e123b02812e16138589e # tag=v2.62.48
+        uses: taiki-e/install-action@68675c5a5f1a6950c3975d33f3ae0ef155e5bf3d # tag=v2.68.15
         with:
           tool: cargo-hack
       # intentionally no target specifier; see https://github.com/jonhoo/rust-ci-conf/pull/4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f87ba7a..f775163 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -147,7 +147,7 @@ jobs:
           toolchain: stable
           components: llvm-tools-preview
       - name: cargo install cargo-llvm-cov
-        uses: taiki-e/install-action@e797ba6a25dbd8669057e123b02812e16138589e # tag=v2.62.48
+        uses: taiki-e/install-action@68675c5a5f1a6950c3975d33f3ae0ef155e5bf3d # tag=v2.68.15
         with:
           tool: cargo-llvm-cov
       - name: cargo generate-lockfile