diff --git a/requirements-dev.txt b/requirements-dev.txt
index 40bcaca4914..000cbeef6df 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -21,7 +21,7 @@ flit==3.10.1
 flit_core==3.10.1
 frozenlist==1.5.0
 h11==0.14.0
-h2==4.1.0
+h2==4.2.0
 hpack==4.1.0
 httpcore==1.0.7
 httpx==0.28.1