diff --git a/books/blackhat_python/requirements.txt b/books/blackhat_python/requirements.txt
index 3081020..b50450c 100644
--- a/books/blackhat_python/requirements.txt
+++ b/books/blackhat_python/requirements.txt
@@ -10,4 +10,4 @@ python-dateutil==2.8.1
 requests==2.23.0
 six==1.14.0
 uritemplate==3.0.1
-urllib3==1.25.8
+urllib3==1.26.5