diff --git a/dev-requirements.txt b/dev-requirements.txt
index 4a22bfb1..d5ea78f8 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -8,7 +8,7 @@ wheel
 # used in unit test only
 opentelemetry-sdk
 opentelemetry-instrumentation-grpc
-httpx>=0.24
+httpx>=0.28.1
 pyOpenSSL>=26.0.0
 # needed for type checking
 Flask>=1.1