diff --git a/.github/workflows/analysis_workflow.yml b/.github/workflows/analysis_workflow.yml
index 978ca2aa7..9dcbbb255 100644
--- a/.github/workflows/analysis_workflow.yml
+++ b/.github/workflows/analysis_workflow.yml
@@ -39,7 +39,7 @@ jobs:
       - name: Setup container
         run: sudo rm -rf /usr/local/lib64/cmake/glew
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
         with:
           fetch-depth: 50
       - name: Create build directories
@@ -109,7 +109,7 @@ jobs:
       - name: Setup container
         run: sudo rm -rf /usr/local/lib64/cmake/glew
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
         with:
           fetch-depth: 50
       - name: Create build directories
@@ -188,7 +188,7 @@ jobs:
       - name: Setup container
         run: sudo rm -rf /usr/local/lib64/cmake/glew
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
         with:
           fetch-depth: 50
       - name: Create build directories
diff --git a/.github/workflows/ci_workflow.yml b/.github/workflows/ci_workflow.yml
index dc6b67f3b..e8a2f4126 100644
--- a/.github/workflows/ci_workflow.yml
+++ b/.github/workflows/ci_workflow.yml
@@ -224,7 +224,7 @@ jobs:
       CC: ${{ matrix.cc-compiler }}
     steps:
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Create build directories
         run: |
           mkdir _install
@@ -373,7 +373,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Create build directories
         run: |
           mkdir _install
@@ -501,7 +501,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Create build directories
         run: |
           mkdir _install
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 39893fb03..d1a0fc98e 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -55,7 +55,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/release-sign.yml b/.github/workflows/release-sign.yml
index fd17ba130..5a8faca9e 100644
--- a/.github/workflows/release-sign.yml
+++ b/.github/workflows/release-sign.yml
@@ -49,7 +49,7 @@ jobs:
         shell: bash
 
       - name: Checkout
-        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
       - name: Create archive
         run: git archive --format=tar.gz -o ${OPENEXR_TARBALL} --prefix ${OPENEXR_PREFIX} ${TAG}
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 86516297d..d4fb061f1 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index c86285ba8..580ff3074 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -54,7 +54,7 @@ jobs:
       
     steps:
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Create build directory
         run: mkdir _build
       - name: Install doxygen