diff --git a/scripts/ia/legacy_Thesis/requirements.txt b/scripts/ia/legacy_Thesis/requirements.txt
index 47846247fe..9090cd3216 100644
--- a/scripts/ia/legacy_Thesis/requirements.txt
+++ b/scripts/ia/legacy_Thesis/requirements.txt
@@ -1,5 +1,5 @@
 requests==2.20.0
-nltk==3.4.5
+nltk==3.6.6
 internetarchive==1.7.7
 pymarc==3.1.8
 rdflib==4.2.2