diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index e19b34a2f..b08e8d8e6 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -21,7 +21,7 @@ jobs:
       DOTNET_TC_QuickJitForLoops: 1
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 3598b7390..e5d1b873f 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -26,7 +26,7 @@ jobs:
       DOTNET_TC_QuickJitForLoops: 1
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dedd4c005..d658e5ec9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Inject slug/short variables
       uses: rlespinasse/github-slug-action@v3.x
@@ -62,7 +62,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Inject slug/short variables
       uses: rlespinasse/github-slug-action@v3.x
@@ -125,7 +125,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Inject slug/short variables
       uses: rlespinasse/github-slug-action@v3.x
@@ -183,7 +183,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
@@ -216,7 +216,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
@@ -249,7 +249,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
@@ -281,7 +281,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
@@ -367,7 +367,7 @@ jobs:
   #    PROJECT_NAME: Lynx
 
   #  steps:
-  #  - uses: actions/checkout@v3
+  #  - uses: actions/checkout@v4
 
   #  - name: Setup .NET
   #    uses: actions/setup-dotnet@v3
diff --git a/.github/workflows/perft.yml b/.github/workflows/perft.yml
index 62fef1be7..30020c070 100644
--- a/.github/workflows/perft.yml
+++ b/.github/workflows/perft.yml
@@ -28,7 +28,7 @@ jobs:
       DOTNET_TC_QuickJitForLoops: 1
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
@@ -63,7 +63,7 @@ jobs:
       DOTNET_TC_QuickJitForLoops: 1
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index efa3fe0ef..64718023a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -66,7 +66,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Inject slug/short variables
       uses: rlespinasse/github-slug-action@v3.x
@@ -150,7 +150,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         token: ${{ secrets.GH_RELEASE }}