diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7aa121c81..b142cbb40 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - uses: actions/cache@v5
         with:
           path: ~/.cache/pip
@@ -39,7 +39,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - uses: actions/cache@v5
         with:
           path: ~/.cache/pip
@@ -119,7 +119,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - uses: actions/cache@v5
         with:
           path: ~/.cache/pip
@@ -165,7 +165,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - uses: actions/cache@v5
         with:
           path: ~/.cache/pip
@@ -227,7 +227,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - uses: actions/cache@v5
         with:
           path: ~/.cache/pip
@@ -256,7 +256,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: "3.14"
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - name: Install dependencies
         run: make deps
       - name: Download all coverage artifacts
diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index dbb20db3a..f950af1c5 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -20,7 +20,7 @@ jobs:
           # 3.12 is the minimum required version for profiling enabled
           python-version: "3.12"
 
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
 
       - name: Build dists
         run: make build
diff --git a/.github/workflows/gh-pages-release.yml b/.github/workflows/gh-pages-release.yml
index 8f0871ec2..b0a8a2f07 100644
--- a/.github/workflows/gh-pages-release.yml
+++ b/.github/workflows/gh-pages-release.yml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: "3.10"
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - name: Build docs
         run: make docs
       - name: Deploy release docs
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 388f0693f..61f77bc03 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: "3.10"
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - name: Build docs
         run: make docs
       - name: Deploy latest docs
diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
index f7ce8c6e5..9f0406f9a 100644
--- a/.github/workflows/pypi.yml
+++ b/.github/workflows/pypi.yml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: '3.10'
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
       - name: Build dists
         run: make build
       - name: Pypi Publish