diff --git a/workshop/part1_refactoring/requirements.txt b/workshop/part1_refactoring/requirements.txt
index 1755011..6c11751 100644
--- a/workshop/part1_refactoring/requirements.txt
+++ b/workshop/part1_refactoring/requirements.txt
@@ -3,7 +3,7 @@ bs4==0.0.1
 contractions==0.0.24
 importlib-metadata==1.5.0
 inflect==4.1.0
-nltk==3.6.6
+nltk==3.9
 numpy==1.22.0
 pyahocorasick==1.4.0
 six==1.14.0