diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 10df601..7034abe 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -18,15 +18,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy --no-self-update
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@7f4fc3e22c37d6ff65e88745f38bd3157c663f7c # v4
         with:
           python-version: 3.8
 
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@42dc69e1aa15d09112580998cf2ef0119e2e91ae # v2
 
       - name: Run cargo fmt
         run: cargo fmt --all -- --check
@@ -44,10 +44,10 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - run: rustup toolchain install stable --profile minimal --no-self-update
 
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@42dc69e1aa15d09112580998cf2ef0119e2e91ae # v2
 
       - run: cargo test --all-features --all-targets
\ No newline at end of file
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 809e6cd..828eb92 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,19 +21,19 @@ jobs:
             target: aarch64
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
         with:
           python-version: 3.x
       - name: Build wheels
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@db323e2cf5679b7feb8bcb561a36b27a0bc19e79 # v1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter
           sccache: 'true'
           manylinux: auto
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: wheels-linux-${{ matrix.platform.target }}
           path: dist
@@ -48,18 +48,18 @@ jobs:
           - runner: macos-15
             target: aarch64
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
         with:
           python-version: 3.x
       - name: Build wheels
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@db323e2cf5679b7feb8bcb561a36b27a0bc19e79 # v1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter
           sccache: 'true'
       - name: Upload wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: wheels-macos-${{ matrix.platform.target }}
           path: dist
@@ -67,14 +67,14 @@ jobs:
   sdist:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
       - name: Build sdist
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@db323e2cf5679b7feb8bcb561a36b27a0bc19e79 # v1
         with:
           command: sdist
           args: --out dist
       - name: Upload sdist
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: wheels-sdist
           path: dist
@@ -84,7 +84,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [linux, macos, sdist]
     steps:
-      - uses: actions/upload-artifact/merge@v4
+      - uses: actions/upload-artifact/merge@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           # Craft expects release assets from github to be a single artifact named after the sha.
           name: ${{ github.sha }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 81a7c0d..1305c5f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,12 +22,12 @@ jobs:
         with:
           app-id: ${{ vars.SENTRY_RELEASE_BOT_CLIENT_ID }}
           private-key: ${{ secrets.SENTRY_RELEASE_BOT_PRIVATE_KEY }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
           token: ${{ steps.token.outputs.token }}
           fetch-depth: 0
       - name: Prepare release
-        uses: getsentry/action-prepare-release@v1
+        uses: getsentry/action-prepare-release@c8e1c2009ab08259029170132c384f03c1064c0e # v1
         env:
           GITHUB_TOKEN: ${{ steps.token.outputs.token }}
         with: