diff --git a/requirements-dev.txt b/requirements-dev.txt
index 163ea8c8..85a1cf8b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -135,7 +135,7 @@ frozenlist==1.7.0 ; python_version >= '3.7'
 
 h11==0.16.0 ; python_version >= '3.7'
 
-h2==4.2.0
+h2==4.3.0
 
 hpack==4.1.0 ; python_full_version >= '3.6.1'