diff --git a/.github/workflows/publish-docs.yml b/.github/workflows/publish-docs.yml
index b48e3dc..c76fd71 100644
--- a/.github/workflows/publish-docs.yml
+++ b/.github/workflows/publish-docs.yml
@@ -17,14 +17,14 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v6
         with:
           python-version: "3.11"
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@v8.1.0
       - name: Build documentation
         run: |
           mkdir pages
diff --git a/.github/workflows/publish-pypi.yml b/.github/workflows/publish-pypi.yml
index f392ba8..2e85baa 100644
--- a/.github/workflows/publish-pypi.yml
+++ b/.github/workflows/publish-pypi.yml
@@ -15,7 +15,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
         with:
           fetch-depth: 0
       - name: Fetch tags
@@ -25,7 +25,7 @@ jobs:
         with:
           python-version: "3.13"
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@v8.1.0
       - name: uv build distribution content
         run: uv build
       - name: Publish package distributions to PyPI
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 3e3b0e1..5730b61 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -13,14 +13,14 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       # checks out the repo
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
       # run pre-commit
       - name: Python setup
         uses: actions/setup-python@v6
         with:
           python-version: "3.13"
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@v8.1.0
       - name: Install just
         run: sudo apt-get update && sudo apt-get install -y just
       - uses: pre-commit/action@v3.0.1
@@ -37,26 +37,26 @@ jobs:
       OS: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
       - name: Python setup
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python_version }}
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@v8.1.0
       - name: Run pytest
         run: uv run --frozen pytest
   coverage_and_badge:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.2
       - name: Python setup
         uses: actions/setup-python@v6
         with:
           python-version: "3.13"
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@v8.1.0
       - name: Install just
         run: sudo apt-get update && sudo apt-get install -y just
       - name: Run coverage check and update badge