diff --git a/requirements/cython.txt b/requirements/cython.txt
index 5cacc7e0e58..6d19b33195c 100644
--- a/requirements/cython.txt
+++ b/requirements/cython.txt
@@ -1,3 +1,3 @@
 -r multidict.txt
 -r typing-extensions.txt  # required for parsing aiohttp/hdrs.py by tools/gen.py
-cython==0.29.27
+cython==0.29.31