diff --git a/code/Ch16/pyproject.toml b/code/Ch16/pyproject.toml
index 9bc773f..51f12a5 100644
--- a/code/Ch16/pyproject.toml
+++ b/code/Ch16/pyproject.toml
@@ -125,7 +125,7 @@ dependencies = [
     "urllib3==2.5.0",
     "utilsforecast==0.2.14",
     "wcwidth==0.2.14",
-    "werkzeug==3.1.3",
+    "werkzeug==3.1.4",
     "xarray==2025.10.1",
     "yarl==1.22.0",
 ]