diff --git a/requirements.txt b/requirements.txt
index 0de091e..9423505 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 jupyterlab==3.6.8
 gensim==4.0.1
 matplotlib==3.4.2
-nltk==3.9
+nltk==3.9.3
 pyLDAvis==3.3.1
 pyspotlight==0.7.2
 python-Levenshtein==0.12.2  # required for gensim