diff --git a/chapter-04/lab-4.3/requirements.txt b/chapter-04/lab-4.3/requirements.txt
index fb4ab40..39483cb 100644
--- a/chapter-04/lab-4.3/requirements.txt
+++ b/chapter-04/lab-4.3/requirements.txt
@@ -9,7 +9,7 @@ h11==0.14.0
 httpcore==1.0.2
 httpx==0.26.0
 httpx-sse==0.4.0
-idna==3.6
+idna==3.7
 pydantic==2.5.3
 pydantic_core==2.14.6
 sgmllib3k==1.0.0