diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index afbc5688..d8a21ef0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
     name: Tests ubuntu-latest
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Setup ccache
@@ -52,7 +52,7 @@ jobs:
     name: Tests macos-11
     runs-on: macos-11
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Setup ccache
@@ -74,7 +74,7 @@ jobs:
 #      run:
 #        shell: msys2 {0}
 #    steps:
-#      - uses: actions/checkout@v3
+#      - uses: actions/checkout@v4
 #        with:
 #          submodules: recursive
 #      - uses: msys2/setup-msys2@v2
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 8ea9104d..e2e9add8 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
diff --git a/.github/workflows/cpp-linter.yml b/.github/workflows/cpp-linter.yml
index dc4556cb..65224059 100644
--- a/.github/workflows/cpp-linter.yml
+++ b/.github/workflows/cpp-linter.yml
@@ -18,7 +18,7 @@ jobs:
   cpp-linter:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Install flint
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 8b881399..20fea7d1 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -24,7 +24,7 @@ jobs:
           - { os: macos-11 }
     #          - { os: windows-2022 } TODO
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: recursive
@@ -45,7 +45,7 @@ jobs:
     name: sdist
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: recursive
diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 596a7d60..be80172e 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     name: my[py] linter
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install flint
         run: sudo apt-get install libflint-dev
       - uses: actions/setup-python@v4
diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index 9203c14e..8b7fdd07 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -34,7 +34,7 @@ jobs:
     #          - runs-on: windows-latest
     #            flint-inst-cmd:
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
@@ -56,7 +56,7 @@ jobs:
       matrix:
         python-version: ["3.8", "3.11"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0