diff --git a/tests/requirements-py3.txt b/tests/requirements-py3.txt
index 1e4a4b641..7c1aacd81 100644
--- a/tests/requirements-py3.txt
+++ b/tests/requirements-py3.txt
@@ -9,3 +9,4 @@ botocore
 bpython
 ipython
 brotlipy
+pywin32; sys_platform == "win32"