diff --git a/vse/requirements.txt b/vse/requirements.txt
index f84bafd..01da278 100644
--- a/vse/requirements.txt
+++ b/vse/requirements.txt
@@ -1,4 +1,4 @@
-nltk==3.2.5
+nltk==3.4.5
 numpy==1.14.1
 Pillow==5.0.0
 pkg-resources==0.0.0