diff --git a/setup.py b/setup.py
index 3362fef..f0d2f26 100755
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@ setup(
     platforms='any',
     install_requires=[
         'six>=1.9.0',
-        'python-engineio>=3.13.0'
+        'python-engineio>=3.13.0,<4'
     ],
     extras_require={
         'client': [