diff --git a/code/Ch3/pyproject.toml b/code/Ch3/pyproject.toml
index e3af12b..df70401 100644
--- a/code/Ch3/pyproject.toml
+++ b/code/Ch3/pyproject.toml
@@ -6,7 +6,7 @@ requires-python = ">=3.13.5"
 dependencies = [
     "adlfs==2025.8.0",
     "aiohappyeyeballs==2.6.1",
-    "aiohttp==3.13.0",
+    "aiohttp==3.13.3",
     "aiosignal==1.4.0",
     "appnope==0.1.4",
     "asttokens==3.0.0",