diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index a9c312d..9d6335f 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -25,7 +25,7 @@ jobs:
 
       - run: rustup toolchain install stable --profile minimal --component llvm-tools-preview --no-self-update
 
-      - uses: taiki-e/install-action@055f5df8c3f65ea01cd41e9dc855becd88953486 # v2.75.18
+      - uses: taiki-e/install-action@481c34c1cf3a84c68b5e46f4eccfc82af798415a # v2.75.23
         with:
           tool: cargo-llvm-cov
 
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 8461e8e..0a4e216 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -20,7 +20,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: cachix/install-nix-action@616559265b40713947b9c190a8ff4b507b5df49b # v31.10.4
+      - uses: cachix/install-nix-action@ab739621df7a23f52766f9ccc97f38da6b7af14f # v31.10.5
 
       - uses: ./
         with: