diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index af804e2973..1709aba506 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1764,7 +1764,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Install mdbook
-        uses: taiki-e/install-action@f7e5d7c961414b23f5b25b2da9294395d08513ad # v2.87.26
+        uses: taiki-e/install-action@ab6895351a88b908e96a4697860d4ffea5e57dbe # v2.87.27
         env:
           # renovate: datasource=crate depName=mdbook
           MDBOOK_VERSION: "0.5.2"
diff --git a/ci/actions-templates/test-docs-template.yaml b/ci/actions-templates/test-docs-template.yaml
index 9aa52ad1f8..ad3788fe64 100644
--- a/ci/actions-templates/test-docs-template.yaml
+++ b/ci/actions-templates/test-docs-template.yaml
@@ -13,7 +13,7 @@ jobs: # skip-all
         with:
           fetch-depth: 0
       - name: Install mdbook
-        uses: taiki-e/install-action@f7e5d7c961414b23f5b25b2da9294395d08513ad # v2.87.26
+        uses: taiki-e/install-action@ab6895351a88b908e96a4697860d4ffea5e57dbe # v2.87.27
         env:
           # renovate: datasource=crate depName=mdbook
           MDBOOK_VERSION: "0.5.2"