diff --git a/requirements-test.txt b/requirements-test.txt
index 265f763..3074dd5 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -11,7 +11,7 @@ grpcio-tools==1.66.1 ; python_version >= "3.11" and python_version < "4.0"
 grpcio==1.66.1 ; python_version >= "3.11" and python_version < "4.0"
 grpclib==0.4.7 ; python_version >= "3.11" and python_version < "4.0"
 h11==0.14.0 ; python_version >= "3.11" and python_version < "4.0"
-h2==4.1.0 ; python_version >= "3.11" and python_version < "4.0"
+h2==4.3.0 ; python_version >= "3.11" and python_version < "4.0"
 hpack==4.0.0 ; python_version >= "3.11" and python_version < "4.0"
 httpcore==0.16.3 ; python_version >= "3.11" and python_version < "4.0"
 httpx==0.23.3 ; python_version >= "3.11" and python_version < "4.0"
diff --git a/requirements.txt b/requirements.txt
index f253841..81d0a76 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ asyncio==3.4.3 ; python_version >= "3.11" and python_version < "4.0"
 grpcio-tools==1.66.1 ; python_version >= "3.11" and python_version < "4.0"
 grpcio==1.66.1 ; python_version >= "3.11" and python_version < "4.0"
 grpclib==0.4.7 ; python_version >= "3.11" and python_version < "4.0"
-h2==4.1.0 ; python_version >= "3.11" and python_version < "4.0"
+h2==4.3.0 ; python_version >= "3.11" and python_version < "4.0"
 hpack==4.0.0 ; python_version >= "3.11" and python_version < "4.0"
 hyperframe==6.0.1 ; python_version >= "3.11" and python_version < "4.0"
 multidict==6.0.5 ; python_version >= "3.11" and python_version < "4.0"