diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 33377eb..2d5b567 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@711e1c3275189d76dcc4d34ddea63bf96ac49090
+        uses: taiki-e/install-action@c070f87102a1c75b3183910f391c1cb887fe13c8
         with:
           tool: just
 
diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index f44cf35..a377812 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@711e1c3275189d76dcc4d34ddea63bf96ac49090
+        uses: taiki-e/install-action@c070f87102a1c75b3183910f391c1cb887fe13c8
         with:
           tool: mdbook,mdbook-mermaid