diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8964e4c9ac..863653fddb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,7 @@ jobs:
     name: Find Trailing Whitespace
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Find Trailing Whitespace
         run: |
           set +e
@@ -62,7 +62,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v4
 
     # Print environment variables to simplify development and debugging
     - name: Environment Variables
diff --git a/.github/workflows/conda-forge-ci.yml b/.github/workflows/conda-forge-ci.yml
index 5fcf5cb468..9a571a511a 100644
--- a/.github/workflows/conda-forge-ci.yml
+++ b/.github/workflows/conda-forge-ci.yml
@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - uses: conda-incubator/setup-miniconda@v2
       with:
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 0dc97ab8d2..712d23f9f4 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v4
 
       - uses: conda-incubator/setup-miniconda@v2
         with:
diff --git a/.github/workflows/update-labeler-file.yml b/.github/workflows/update-labeler-file.yml
index f6c10a9eb8..d3f28a9322 100644
--- a/.github/workflows/update-labeler-file.yml
+++ b/.github/workflows/update-labeler-file.yml
@@ -10,7 +10,7 @@ jobs:
   get-version:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Update the labeler file
         run: |
           cd ./.ci