diff --git a/requirements-dev.txt b/requirements-dev.txt
index 69fee2f9..d9077dd5 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -136,7 +136,7 @@ h2==4.1.0
 
 hpack==4.0.0 ; python_full_version >= '3.6.1'
 
-httpcore==0.17.2 ; python_version >= '3.7'
+httpcore==0.17.3 ; python_version >= '3.7'
 
 httpx[http2]==0.24.1