diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e2645c0..69a9f15 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -76,7 +76,7 @@ jobs:
         run: cargo +nightly doc -p agent-client-protocol --all-features --no-deps
 
       - name: Install just
-        uses: taiki-e/install-action@4684b8405694ae9dd42c9f39ba901a70ae83f4a3
+        uses: taiki-e/install-action@43aecc8d72668fbcfe75c31400bc4f890f1c5853
         with:
           tool: just
 
@@ -111,7 +111,7 @@ jobs:
           toolchain: stable
 
       - name: Install cargo-hack
-        uses: taiki-e/install-action@4684b8405694ae9dd42c9f39ba901a70ae83f4a3
+        uses: taiki-e/install-action@43aecc8d72668fbcfe75c31400bc4f890f1c5853
         with:
           tool: cargo-hack
 
diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index 23eefba..fffa5d0 100644
--- a/.github/workflows/mdbook.yml
+++ b/.github/workflows/mdbook.yml
@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
 
       - name: Install mdBook
-        uses: taiki-e/install-action@4684b8405694ae9dd42c9f39ba901a70ae83f4a3
+        uses: taiki-e/install-action@43aecc8d72668fbcfe75c31400bc4f890f1c5853
         with:
           tool: mdbook,mdbook-mermaid