diff --git a/.github/workflows/build-uv-cache.yml b/.github/workflows/build-uv-cache.yml
index 06835d14c..20ad8e109 100644
--- a/.github/workflows/build-uv-cache.yml
+++ b/.github/workflows/build-uv-cache.yml
@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/generate-tool-specs.yml b/.github/workflows/generate-tool-specs.yml
index ff078ba8f..2721bba48 100644
--- a/.github/workflows/generate-tool-specs.yml
+++ b/.github/workflows/generate-tool-specs.yml
@@ -22,7 +22,7 @@ jobs:
     steps:
       - name: Generate GitHub App token
         id: app-token
-        uses: tibdex/github-app-token@v2
+        uses: tibdex/github-app-token@3beb63f4bd073e61482598c45c71c1019b59b73a # v2
         with:
           app_id: ${{ secrets.CREWAI_TOOL_SPECS_APP_ID }}
           private_key: ${{ secrets.CREWAI_TOOL_SPECS_PRIVATE_KEY }}
@@ -34,7 +34,7 @@ jobs:
           token: ${{ steps.app-token.outputs.token }}
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: "3.12"
diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index b62b0eba5..4ade0d313 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -13,7 +13,7 @@ jobs:
       code: ${{ steps.filter.outputs.code }}
     steps:
       - uses: actions/checkout@v4
-      - uses: dorny/paths-filter@v3
+      - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
         id: filter
         with:
           filters: |
@@ -41,7 +41,7 @@ jobs:
             uv-main-py3.11-
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: "3.11"
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index d5879c8e3..fc923dc20 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -44,7 +44,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: "3.12"
@@ -103,7 +103,7 @@ jobs:
       contents: read
     steps:
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: "3.12"
diff --git a/.github/workflows/pr-size.yml b/.github/workflows/pr-size.yml
index 5653dcc09..85ef9b003 100644
--- a/.github/workflows/pr-size.yml
+++ b/.github/workflows/pr-size.yml
@@ -10,7 +10,7 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-      - uses: codelytv/pr-size-labeler@v1
+      - uses: codelytv/pr-size-labeler@095a41fca88b8764fd9e008ad269bcdb82bb38b9 # v1
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           xs_label: "size/XS"
diff --git a/.github/workflows/pr-title.yml b/.github/workflows/pr-title.yml
index 00dafe5a5..3ca0982cf 100644
--- a/.github/workflows/pr-title.yml
+++ b/.github/workflows/pr-title.yml
@@ -12,7 +12,7 @@ jobs:
   pr-title:
     runs-on: ubuntu-latest
     steps:
-      - uses: amannn/action-semantic-pull-request@v5
+      - uses: amannn/action-semantic-pull-request@e32d7e603df1aa1ba07e981f2a23455dee596825 # v5
         continue-on-error: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index f2b1bc1b0..06c52ce4d 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -34,7 +34,7 @@ jobs:
           python-version: "3.12"
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v4
+        uses: astral-sh/setup-uv@38f3f104447c67c051c4a08e39b64a148898af3a # v4
 
       - name: Build packages
         run: |
@@ -63,7 +63,7 @@ jobs:
           ref: ${{ inputs.release_tag || github.ref }}
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: "3.12"
@@ -159,7 +159,7 @@ jobs:
 
       - name: Notify Slack
         if: success()
-        uses: slackapi/slack-github-action@v2.1.0
+        uses: slackapi/slack-github-action@b0fa283ad8fea605de13dc3f449259339835fc52 # v2.1.0
         with:
           webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
           webhook-type: incoming-webhook
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 71a7b801a..4378c4978 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,7 +13,7 @@ jobs:
       code: ${{ steps.filter.outputs.code }}
     steps:
       - uses: actions/checkout@v4
-      - uses: dorny/paths-filter@v3
+      - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
         id: filter
         with:
           filters: |
@@ -51,7 +51,7 @@ jobs:
             uv-main-py${{ matrix.python-version }}-
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/type-checker.yml b/.github/workflows/type-checker.yml
index 8d88d4b6a..c1268dadc 100644
--- a/.github/workflows/type-checker.yml
+++ b/.github/workflows/type-checker.yml
@@ -13,7 +13,7 @@ jobs:
       code: ${{ steps.filter.outputs.code }}
     steps:
       - uses: actions/checkout@v4
-      - uses: dorny/paths-filter@v3
+      - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
         id: filter
         with:
           filters: |
@@ -48,7 +48,7 @@ jobs:
             uv-main-py${{ matrix.python-version }}-
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/update-test-durations.yml b/.github/workflows/update-test-durations.yml
index 4084fb64d..fda5a2625 100644
--- a/.github/workflows/update-test-durations.yml
+++ b/.github/workflows/update-test-durations.yml
@@ -38,7 +38,7 @@ jobs:
             uv-main-py${{ matrix.python-version }}-
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/vulnerability-scan.yml b/.github/workflows/vulnerability-scan.yml
index bf61b8e83..878310544 100644
--- a/.github/workflows/vulnerability-scan.yml
+++ b/.github/workflows/vulnerability-scan.yml
@@ -31,7 +31,7 @@ jobs:
             uv-main-py3.11-
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "0.11.3"
           python-version: "3.11"