diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 976dbc2..0cdd6f8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,9 @@ on:
 env:
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -16,9 +19,9 @@ jobs:
         python-version: ["3.11", "3.12"]
 
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - uses: actions/setup-python@v7
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: ${{ matrix.python-version }}
 
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 4cef828..6ceb403 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -25,18 +25,18 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v7
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v4.37.9
+        uses: github/codeql-action/init@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4.37.9
         with:
           languages: python
           queries: +security-extended
 
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v4.37.9
+        uses: github/codeql-action/autobuild@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4.37.9
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v4.37.9
+        uses: github/codeql-action/analyze@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4.37.9
         with:
           category: /language:python
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index c2ea211..6b7ba23 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -36,11 +36,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-python@v7
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.11"
           cache: pip
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a3513de..9745c59 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -16,9 +16,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - uses: actions/setup-python@v7
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.11"
 
@@ -47,7 +47,7 @@ jobs:
             --workspace "$GITHUB_WORKSPACE" \
             --expected-version "${GITHUB_REF_NAME#v}"
 
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.0
         with:
           name: dist
           path: dist/
@@ -57,7 +57,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: pypi
     steps:
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.0
         with:
           name: dist
           path: dist/
diff --git a/.github/workflows/sbom.yml b/.github/workflows/sbom.yml
index d3d3c94..0c4b260 100644
--- a/.github/workflows/sbom.yml
+++ b/.github/workflows/sbom.yml
@@ -9,6 +9,9 @@ on:
 env:
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
 
+permissions:
+  contents: read
+
 jobs:
   sbom:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 79373b3..4245fdf 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -20,7 +20,7 @@ jobs:
       actions: read
     steps:
       - name: Checkout
-        uses: actions/checkout@v7
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
           fetch-depth: 0
@@ -35,6 +35,6 @@ jobs:
           publish_results: false
 
       - name: Upload SARIF
-        uses: github/codeql-action/upload-sarif@v4.37.9
+        uses: github/codeql-action/upload-sarif@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4.37.9
         with:
           sarif_file: scorecard-results.sarif