diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e84fc05..ee86920 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Rust
       # --no-self-update is necessary because the windows environment cannot self-update rustup.exe.
       run: rustup update stable --no-self-update && rustup default stable
@@ -56,7 +56,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Rust
       # --no-self-update is necessary because the windows environment cannot self-update rustup.exe.
       run: rustup update stable --no-self-update && rustup default stable
@@ -87,7 +87,7 @@ jobs:
           - wasm32-wasi
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Cache cargo build and registry
         uses: actions/cache@v3
         with:
@@ -127,7 +127,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Cache cargo build and registry
       uses: actions/cache@v3
       with:
@@ -161,7 +161,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Cache cargo build and registry
       uses: actions/cache@v3
       with:
@@ -193,7 +193,7 @@ jobs:
           - ubuntu-latest
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Cache cargo build and registry
         uses: actions/cache@v3
         with:
@@ -242,7 +242,7 @@ jobs:
             target: powerpc64-unknown-linux-gnu
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Cache cargo build and registry
         uses: actions/cache@v3
         with:
@@ -288,7 +288,7 @@ jobs:
             target: powerpc64-unknown-linux-gnu
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Cache cargo build and registry
         uses: actions/cache@v3
         with:
@@ -315,7 +315,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Cache cargo build and registry
         uses: actions/cache@v3
         with:
@@ -336,7 +336,7 @@ jobs:
     name: valgrind
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Cache cargo build and registry
         uses: actions/cache@v3
         with:
@@ -379,7 +379,7 @@ jobs:
       - sanitizer
       - loom
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install latest nightly
         uses: actions-rs/toolchain@v1
         with:
diff --git a/.github/workflows/loc.yml b/.github/workflows/loc.yml
index 9011e7f..48c6f49 100644
--- a/.github/workflows/loc.yml
+++ b/.github/workflows/loc.yml
@@ -25,7 +25,7 @@ jobs:
   loc:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install Rust
         run: |