diff --git a/binder/requirements.txt b/binder/requirements.txt
index c0eaf075..ba75f7e9 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -3,7 +3,7 @@ gym==0.23.1
 huggingface==0.0.1
 imageio==2.16.2
 keras==2.8.0
-nltk==3.5
+nltk==3.6.6
 pandas==1.4.2
 pillow==9.1.1
 pygame==2.1.2