diff --git a/.github/workflows/qiskit.yml b/.github/workflows/qiskit.yml
index 969a2dd..bad7c35 100644
--- a/.github/workflows/qiskit.yml
+++ b/.github/workflows/qiskit.yml
@@ -6,7 +6,7 @@ jobs:
   stable:
     runs-on: ubuntu-latest
     env:
-      python-version: "3.12.5"
+      python-version: "3.9"
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ env.python-version }}
@@ -32,7 +32,7 @@ jobs:
   dev:
     runs-on: ubuntu-latest
     env:
-      python-version: "3.12.5"
+      python-version: "3.9"
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ env.python-version }}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b28a15e..11cfa03 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.12.5
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-          python-version: '3.12.5'
+          python-version: '3.9'
     - name: Install tox
       run: |
         python -m pip install --upgrade pip
@@ -33,7 +33,7 @@ jobs:
     strategy:
       max-parallel: 2
       matrix:
-        python-version: [3.12.5]
+        python-version: [3.9]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
@@ -58,10 +58,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.12.5
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-          python-version: '3.12.5'
+          python-version: '3.9'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -75,10 +75,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.12.5
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-          python-version: '3.12.5'
+          python-version: '3.9'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip