diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1c4845e0..ecd91c4e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -139,7 +139,7 @@ h2==4.2.0
 
 hpack==4.1.0 ; python_full_version >= '3.6.1'
 
-httpcore==1.0.8 ; python_version >= '3.7'
+httpcore==1.0.9 ; python_version >= '3.7'
 
 httpx[http2]==0.28.1