diff --git a/setup.py b/setup.py
index 85cdbd9d..cb0ae15d 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@
 from setuptools.command import sdist as setuptools_sdist
 
 
-CYTHON_DEPENDENCY = 'Cython==0.29.23'
+CYTHON_DEPENDENCY = 'Cython(>=0.29.24,<0.30.0)'
 
 # Minimal dependencies required to test edgedb.
 TEST_DEPENDENCIES = [