diff --git a/setup_env/wfd_requirements.txt b/setup_env/wfd_requirements.txt
index 426e2c3..bb260d1 100644
--- a/setup_env/wfd_requirements.txt
+++ b/setup_env/wfd_requirements.txt
@@ -34,7 +34,7 @@ python-dateutil==2.9.0.post0
 transformers==4.40.1
 accelerate==0.29.3
 plotext==5.2.8
-nltk==3.8.1
+nltk==3.9
 statsmodels==0.14.2
 sortedcontainers==2.4.0
 jsonlines==4.0.0