diff --git a/.github/workflows/S1-Test-CI.yml b/.github/workflows/S1-Test-CI.yml
index 097c016..9f5523a 100644
--- a/.github/workflows/S1-Test-CI.yml
+++ b/.github/workflows/S1-Test-CI.yml
@@ -161,7 +161,7 @@ jobs:
           prefix-key: v1-rust-no-bin
 
       - name: Install cargo-tarpaulin
-        uses: taiki-e/install-action@v2
+        uses: taiki-e/install-action@v2.85.6
         with:
           tool: cargo-tarpaulin
 
diff --git a/.github/workflows/S2-Release-GitHub.yml b/.github/workflows/S2-Release-GitHub.yml
index aa54467..e90b3c3 100644
--- a/.github/workflows/S2-Release-GitHub.yml
+++ b/.github/workflows/S2-Release-GitHub.yml
@@ -65,7 +65,7 @@ jobs:
           prefix-key: v1-rust-no-bin
 
       - name: Install cargo-tarpaulin
-        uses: taiki-e/install-action@v2
+        uses: taiki-e/install-action@v2.85.6
         with:
           tool: cargo-tarpaulin