diff --git a/tests/requirements.txt b/tests/requirements.txt
index 3a85dc5..cabcdee 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,4 +1,4 @@
 testinfra
 paramiko
-pywinrm
+pywinrm; sys.platform == 'win32'
 six>=1.10.0