diff --git a/.github/workflows/check-reserved-keywords.yml b/.github/workflows/check-reserved-keywords.yml
index 5978ec79..a5d81c97 100644
--- a/.github/workflows/check-reserved-keywords.yml
+++ b/.github/workflows/check-reserved-keywords.yml
@@ -10,10 +10,10 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
     - name: setup python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
       with:
         python-version: 3.12
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e720fa04..40733a71 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,9 +18,9 @@ jobs:
         toxenv: [django42, django52, quality]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
     - name: setup python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -37,7 +37,7 @@ jobs:
 
     - name: Run Coverage
       if: matrix.python-version == '3.12' && matrix.toxenv=='django42'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@75cd11691c0faa626561e295848008c8a7dddffe # v5.5.4
       with:
         flags: unittests
         fail_ci_if_error: true
@@ -51,10 +51,10 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
     - name: setup python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
       with:
         python-version: 3.12
 
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index eba2eb2d..b7a41360 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -11,9 +11,9 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       - name: setup python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: 3.12
 
diff --git a/.github/workflows/verify_changed_contract.yml b/.github/workflows/verify_changed_contract.yml
index 13d3b46c..dfe635c0 100644
--- a/.github/workflows/verify_changed_contract.yml
+++ b/.github/workflows/verify_changed_contract.yml
@@ -19,10 +19,10 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
     - name: setup python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
       with:
         python-version: 3.12