diff --git a/.github/workflows/_test.yml b/.github/workflows/_test.yml
index 624f6956b9..edf598d83c 100644
--- a/.github/workflows/_test.yml
+++ b/.github/workflows/_test.yml
@@ -16,7 +16,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python (oldest supported version)
-        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: "3.9"
           cache: 'pip'
@@ -55,7 +55,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'
@@ -99,7 +99,7 @@ jobs:
         run: touch requirements.txt
 
       - name: Set up Python
-        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: '3.x'
           cache: 'pip'
diff --git a/.github/workflows/_test_sslib_main.yml b/.github/workflows/_test_sslib_main.yml
index 86b4d946b7..feb049c5f8 100644
--- a/.github/workflows/_test_sslib_main.yml
+++ b/.github/workflows/_test_sslib_main.yml
@@ -16,7 +16,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python
-        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: '3.x'
           cache: 'pip'
diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index ff87d4210f..e893b3b209 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -24,7 +24,7 @@ jobs:
           ref: ${{ github.event.workflow_run.head_branch }}
 
       - name: Set up Python
-        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: '3.x'
 
diff --git a/.github/workflows/specification-version-check.yml b/.github/workflows/specification-version-check.yml
index 9fcd5b4f88..3a7829b526 100644
--- a/.github/workflows/specification-version-check.yml
+++ b/.github/workflows/specification-version-check.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
          persist-credentials: false
-      - uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: "3.x"
       - id: get-version