diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 6825573b3..003efa8d3 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -9,7 +9,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
 
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v1
diff --git a/.github/workflows/lints.yml b/.github/workflows/lints.yml
index d44001af5..c198800d3 100644
--- a/.github/workflows/lints.yml
+++ b/.github/workflows/lints.yml
@@ -8,7 +8,7 @@ jobs:
     name: Scripted diffs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
         with:
           fetch-depth: 0
           ref: ${{ github.event.pull_request.head.sha }}
@@ -19,7 +19,7 @@ jobs:
     name: General
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
 
       - name: Include guards
         run: ./test/lint/lint-include-guards.sh
@@ -61,7 +61,7 @@ jobs:
     name: Clippy (1.54.0)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: 1.54.0
@@ -78,7 +78,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: 1.54.0