diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 36589f6..e93d14a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,13 +32,13 @@ jobs:
       CI_OUTPUT_NAME: operandomerge-${{ github.run_id }}-${{ github.run_attempt }}-output
     steps:
       - name: Check out source
-        uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           clean: true
           fetch-depth: 0
           persist-credentials: false
       - name: Set up Python
-        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.14"
       - name: Configure and verify shared GUI runtime
@@ -173,13 +173,13 @@ jobs:
       CI_ENV_NAME: operandomerge-${{ github.run_id }}-${{ github.run_attempt }}-python-${{ matrix.python }}-venv
     steps:
       - name: Check out source
-        uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           clean: true
           fetch-depth: 0
           persist-credentials: false
       - name: Set up Python
-        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: ${{ matrix.python }}
       - name: Create isolated compatibility environment
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 53f52ef..d9334b3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -51,7 +51,7 @@ jobs:
           xvfb-run -a /tmp/operandomerge-release/bin/python -c
           "from operandomerge.gui import create_app;
           root, app = create_app(); root.update(); root.destroy()"
-      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
+      - uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7
         with:
           name: python-package
           path: dist/
@@ -67,7 +67,7 @@ jobs:
     permissions:
       id-token: write # Required for PyPI trusted publishing; no API token is stored.
     steps:
-      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
+      - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8
         with:
           name: python-package
           path: dist/