diff --git a/04-dissemination/nltk-freq-dist/requirements.txt b/04-dissemination/nltk-freq-dist/requirements.txt
index 7cb82cd..863d8c8 100644
--- a/04-dissemination/nltk-freq-dist/requirements.txt
+++ b/04-dissemination/nltk-freq-dist/requirements.txt
@@ -1 +1 @@
-nltk==3.4.5
\ No newline at end of file
+nltk==3.9
\ No newline at end of file