diff --git a/setup.cfg b/setup.cfg
index 68b7671..41d2728 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -46,7 +46,7 @@ install_requires =
   property-cached ~=1.6
   configparser ~=3.2 ; python_version < '3'
   fs ~=2.2
-  paramiko ~=2.0
+  paramiko >=2.0,<4.0
   six ~=1.10
   setuptools >=38.3.0
 tests_require =