diff --git a/setup.cfg b/setup.cfg
index 2d32c3b3..b0837791 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -52,7 +52,7 @@ dev =
     tox>=3.14.6
     zest.releaser>=6.20.1
     psycopg2-binary>=2.8.5
-    PyMySQL>=0.9,<0.10
+    PyMySQL>=0.9,<1.1
 
 doc =
     Sphinx==4.1.0