diff --git a/requirements.txt b/requirements.txt
index 723bc0b..4185e23 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ idna==2.8
 ipython-genutils==0.2.0
 ipython==8.10.0
 jedi==0.13.3
-nltk==3.4.5
+nltk==3.6.6
 numpy==1.22.0
 parso==0.4.0
 pexpect==4.7.0 ; sys_platform != 'win32'