diff --git a/setup.cfg b/setup.cfg
index ca6253b5..e27fd0ab 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -19,5 +19,5 @@ classifier =
 packages = find:
 python_requires = >=3.6
 install_requires =
-    python-can >= 3.0.0
+    python-can >= 3.0.0, <4.0.0
 include_package_data = True