diff --git a/pytket/extensions/qiskit/qiskit_convert.py b/pytket/extensions/qiskit/qiskit_convert.py
index 76ab16a7..a1d5dd6a 100644
--- a/pytket/extensions/qiskit/qiskit_convert.py
+++ b/pytket/extensions/qiskit/qiskit_convert.py
@@ -15,7 +15,6 @@
 
 """Methods to allow conversion between Qiskit and pytket circuit classes
 """
-import warnings
 from collections import defaultdict
 from collections.abc import Iterable
 from inspect import signature