diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eaf4ccc..ba58149 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -90,7 +90,7 @@ jobs:
         run: cargo +stable doc -p agent-client-protocol --lib --target wasm32-wasip2 --all-features --no-deps --locked
 
       - name: Install just
-        uses: taiki-e/install-action@82cd3e7658a6f96c86c0234aeeda1748937cb0a1
+        uses: taiki-e/install-action@ba47c86ac325773530516bb756137ac718732518
         with:
           tool: just
 
@@ -125,7 +125,7 @@ jobs:
           toolchain: stable
 
       - name: Install cargo-hack
-        uses: taiki-e/install-action@82cd3e7658a6f96c86c0234aeeda1748937cb0a1
+        uses: taiki-e/install-action@ba47c86ac325773530516bb756137ac718732518
         with:
           tool: cargo-hack
 
diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index 76265c2..e2ec0ce 100644
--- a/.github/workflows/mdbook.yml
+++ b/.github/workflows/mdbook.yml
@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1
 
       - name: Install mdBook
-        uses: taiki-e/install-action@82cd3e7658a6f96c86c0234aeeda1748937cb0a1
+        uses: taiki-e/install-action@ba47c86ac325773530516bb756137ac718732518
         with:
           tool: mdbook,mdbook-mermaid