diff --git a/scripts/nb-tester/qiskit_docs_notebook_tester/__init__.py b/scripts/nb-tester/qiskit_docs_notebook_tester/__init__.py
index 76284e0e33e..ac5cc037ecd 100644
--- a/scripts/nb-tester/qiskit_docs_notebook_tester/__init__.py
+++ b/scripts/nb-tester/qiskit_docs_notebook_tester/__init__.py
@@ -40,6 +40,7 @@
 
 # If not submitting jobs, we also run this code before notebook execution to mock the real backend
 MOCKING_CODE = """\
+import warnings
 from qiskit_ibm_runtime import QiskitRuntimeService
 from qiskit.providers.fake_provider import GenericBackendV2