diff --git a/.github/workflows/build_tests.yml b/.github/workflows/build_tests.yml
index 3da280b..d7c5ded 100644
--- a/.github/workflows/build_tests.yml
+++ b/.github/workflows/build_tests.yml
@@ -7,7 +7,7 @@ jobs:
   build_tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.head_ref }}
       - name: Setup Python
diff --git a/.github/workflows/dev2master.yml b/.github/workflows/dev2master.yml
index cc76fee..8dc0c67 100644
--- a/.github/workflows/dev2master.yml
+++ b/.github/workflows/dev2master.yml
@@ -8,7 +8,7 @@ jobs:
   build_and_publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
           ref: dev
diff --git a/.github/workflows/license_tests.yml b/.github/workflows/license_tests.yml
index 30fa35b..7b93c41 100644
--- a/.github/workflows/license_tests.yml
+++ b/.github/workflows/license_tests.yml
@@ -12,7 +12,7 @@ jobs:
   license_tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v1
         with:
diff --git a/.github/workflows/publish_alpha.yml b/.github/workflows/publish_alpha.yml
index ac8c701..9f9e6f7 100644
--- a/.github/workflows/publish_alpha.yml
+++ b/.github/workflows/publish_alpha.yml
@@ -22,7 +22,7 @@ jobs:
   build_and_publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           ref: dev
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
diff --git a/.github/workflows/publish_build.yml b/.github/workflows/publish_build.yml
index e48f290..eb119d0 100644
--- a/.github/workflows/publish_build.yml
+++ b/.github/workflows/publish_build.yml
@@ -8,7 +8,7 @@ jobs:
   build_and_publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           ref: dev
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
diff --git a/.github/workflows/publish_docker.yml b/.github/workflows/publish_docker.yml
index 8dbcbd9..590289b 100644
--- a/.github/workflows/publish_docker.yml
+++ b/.github/workflows/publish_docker.yml
@@ -15,7 +15,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.ref }}
 
diff --git a/.github/workflows/publish_major.yml b/.github/workflows/publish_major.yml
index 7466f89..1074869 100644
--- a/.github/workflows/publish_major.yml
+++ b/.github/workflows/publish_major.yml
@@ -8,7 +8,7 @@ jobs:
   build_and_publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           ref: dev
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
diff --git a/.github/workflows/publish_minor.yml b/.github/workflows/publish_minor.yml
index d69d69b..78b0b84 100644
--- a/.github/workflows/publish_minor.yml
+++ b/.github/workflows/publish_minor.yml
@@ -8,7 +8,7 @@ jobs:
   build_and_publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           ref: dev
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index f952112..14e3bd6 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -38,7 +38,7 @@ jobs:
         python-version: [ 3.7, 3.8, 3.9, "3.10" ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - name: Set up python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with: