diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b5d8796..59ac5b0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,14 +6,14 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: np-complete/build-book-action@3c851008c5ac01708af260fc809fcf7294a5dcf0 # v2
-      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: book
           path: book.pdf
   textlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-      - uses: tsuyoshicho/action-textlint@ace6abb4fd6736f30f2319c7e21b7adf4e93dc46 # v3
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: tsuyoshicho/action-textlint@ace6abb4fd6736f30f2319c7e21b7adf4e93dc46 # v3.11.2
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 0e049d5..27ae1c6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -10,6 +10,6 @@ jobs:
     if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: np-complete/build-book-action@3c851008c5ac01708af260fc809fcf7294a5dcf0 # v2
       - uses: np-complete/publish-book-action@08a80ee532be432d973aad4a47efc1cf1a3ddd8e # v2