diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 00b5d04..065d398 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -16,9 +16,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.10
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: "3.10"
     - name: Install dependencies
diff --git a/TB2J/pauli.py b/TB2J/pauli.py
index 1aa192d..ec34029 100644
--- a/TB2J/pauli.py
+++ b/TB2J/pauli.py
@@ -154,8 +154,6 @@ def test_gather_pauli_blocks():
     M = np.random.rand(4, 4)
     MI, Mx, My, Mz = pauli_block_all(M)
     M2 = gather_pauli_blocks(MI, Mx, My, Mz)
-    print(M)
-    print(M2)
     assert np.allclose(M, M2)