diff --git a/.github/workflows/analysis_workflow.yml b/.github/workflows/analysis_workflow.yml
index 3b7443da57..6c9c32cf8c 100644
--- a/.github/workflows/analysis_workflow.yml
+++ b/.github/workflows/analysis_workflow.yml
@@ -90,7 +90,7 @@ jobs:
       CC: ${{ matrix.cc-compiler }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install docs env
         run: share/ci/scripts/linux/yum/install_docs_env.sh
         if: matrix.build-docs == 'ON'
@@ -189,11 +189,11 @@ jobs:
             python-version: 3.9
     steps:
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install docs env
         run: share/ci/scripts/macos/install_docs_env.sh
         if: matrix.build-docs == 'ON'
@@ -295,11 +295,11 @@ jobs:
             python-version: 3.9
     steps:
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install docs env
         run: share/ci/scripts/windows/install_docs_env.sh
         shell: bash
@@ -418,7 +418,7 @@ jobs:
       CC: gcc
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 50
       - name: Install docs env
diff --git a/.github/workflows/ci_workflow.yml b/.github/workflows/ci_workflow.yml
index 77527cd723..ff87ed3c47 100644
--- a/.github/workflows/ci_workflow.yml
+++ b/.github/workflows/ci_workflow.yml
@@ -251,7 +251,7 @@ jobs:
       CC: ${{ matrix.cc-compiler }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       # minizip-ng requires CMake 3.13+ but VFX2019 image ships with 3.12
       - name: Upgrade VFX2019 CMake
         run: pip install cmake==3.13.3
@@ -336,7 +336,7 @@ jobs:
   # ---------------------------------------------------------------------------
 
   macos:
-    name: 'macOS 10.15 
+    name: 'macOS 11
       <AppleClang 11.0 
        config=${{ matrix.build-type }}, 
        shared=${{ matrix.build-shared }}, 
@@ -349,7 +349,7 @@ jobs:
     if: |
       github.event_name == 'push' ||
       github.event.pull_request.head.repo.full_name != github.repository
-    runs-on: macos-10.15
+    runs-on: macos-11
     strategy:
       matrix:
         build: [1, 2, 3, 4, 5, 6]
@@ -417,11 +417,11 @@ jobs:
             python-version: 2.7
     steps:
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install docs env
         run: share/ci/scripts/macos/install_docs_env.sh
         if: matrix.build-docs == 'ON'
@@ -585,11 +585,11 @@ jobs:
             python-version: 2.7
     steps:
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install docs env
         run: share/ci/scripts/windows/install_docs_env.sh
         shell: bash
diff --git a/.github/workflows/wheel_workflow.yml b/.github/workflows/wheel_workflow.yml
index 9db00dec80..737a736019 100644
--- a/.github/workflows/wheel_workflow.yml
+++ b/.github/workflows/wheel_workflow.yml
@@ -51,7 +51,7 @@ jobs:
 
     steps:
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Build SDist
       run: pipx run build --sdist
@@ -59,7 +59,7 @@ jobs:
     - name: Check metadata
       run: pipx run twine check dist/*
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         path: dist/*.tar.gz
 
@@ -115,15 +115,15 @@ jobs:
             arch: aarch64
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
         name: Install Python
         with:
           python-version: '3.8'
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v2
         with:
           platforms: all
 
@@ -133,7 +133,7 @@ jobs:
           CIBW_BUILD: ${{ matrix.python }}
           CIBW_ARCHS: ${{ matrix.arch }}
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           path: ./wheelhouse/*.whl
 
@@ -143,7 +143,7 @@ jobs:
 
   macos:
     name: Build wheels on macOS
-    runs-on: macos-10.15
+    runs-on: macos-11
     # Don't run on OCIO forks
     if: |
       github.event_name != 'schedule' ||
@@ -186,9 +186,9 @@ jobs:
             arch: arm64
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
         name: Install Python
         with:
           python-version: '3.8'
@@ -199,7 +199,7 @@ jobs:
           CIBW_BUILD: ${{ matrix.python }}
           CIBW_ARCHS: ${{ matrix.arch }}
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           path: ./wheelhouse/*.whl
 
@@ -237,9 +237,9 @@ jobs:
             arch: AMD64
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
         name: Install Python
         with:
           python-version: '3.8'
@@ -250,7 +250,7 @@ jobs:
           CIBW_BUILD: ${{ matrix.python }}
           CIBW_ARCHS: ${{ matrix.arch }}
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           path: ./wheelhouse/*.whl
 
@@ -260,9 +260,9 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
     steps:
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           name: artifact
           path: dist