diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8909f4d37b..af804e2973 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@183e4297cca2404691e9380e1307288dced5c82a # v2.87.25
+        uses: taiki-e/install-action@f7e5d7c961414b23f5b25b2da9294395d08513ad # v2.87.26
         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 fe59bcd989..9aa52ad1f8 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@183e4297cca2404691e9380e1307288dced5c82a # v2.87.25
+        uses: taiki-e/install-action@f7e5d7c961414b23f5b25b2da9294395d08513ad # v2.87.26
         env:
           # renovate: datasource=crate depName=mdbook
           MDBOOK_VERSION: "0.5.2"