diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 2186f5f..24649f8 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1967919..185be7f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,7 +10,7 @@ jobs:
     name: "Create Release"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Is pre-release?
         id: is_pre_release
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0c04c6b..abc2032 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,7 @@ jobs:
           - 'ubuntu-latest'
           - 'macos-latest'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # NB: We have a Docker setup for testing -- why do all this?
       #     Because we want to confirm it runs on macOS, and