diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 668d766..6581fcc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,7 +46,7 @@ jobs:
         run: cargo build --all-targets --all-features
 
       - name: Install just
-        uses: taiki-e/install-action@c070f87102a1c75b3183910f391c1cb887fe13c8
+        uses: taiki-e/install-action@b550161ef8a7bc4f2a671c0b03a18ac9ccedea1e
         with:
           tool: just
 
@@ -89,7 +89,7 @@ jobs:
           toolchain: stable
 
       - name: Install cargo-hack
-        uses: taiki-e/install-action@c070f87102a1c75b3183910f391c1cb887fe13c8
+        uses: taiki-e/install-action@b550161ef8a7bc4f2a671c0b03a18ac9ccedea1e
         with:
           tool: cargo-hack
 
diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index a377812..8f5ae4a 100644
--- a/.github/workflows/mdbook.yml
+++ b/.github/workflows/mdbook.yml
@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Install mdBook
-        uses: taiki-e/install-action@c070f87102a1c75b3183910f391c1cb887fe13c8
+        uses: taiki-e/install-action@b550161ef8a7bc4f2a671c0b03a18ac9ccedea1e
         with:
           tool: mdbook,mdbook-mermaid