diff --git a/Chapter01/requirements.txt b/Chapter01/requirements.txt
index 709d589..e82dfdc 100644
--- a/Chapter01/requirements.txt
+++ b/Chapter01/requirements.txt
@@ -52,6 +52,6 @@ tornado==6.4 ; python_version >= "3.9" and python_version < "3.10"
 traitlets==5.14.0 ; python_version >= "3.9" and python_version < "3.10"
 typing-extensions==4.9.0 ; python_version >= "3.9" and python_version < "3.10"
 tzdata==2023.3 ; python_version >= "3.9" and python_version < "3.10"
-urllib3==2.1.0 ; python_version >= "3.9" and python_version < "3.10"
+urllib3==2.6.3 ; python_version >= "3.9" and python_version < "3.10"
 wcwidth==0.2.12 ; python_version >= "3.9" and python_version < "3.10"
 zipp==3.17.0 ; python_version >= "3.9" and python_version < "3.10"