diff --git a/lessons/5-NLP/requirements-pytorch.txt b/lessons/5-NLP/requirements-pytorch.txt
index b82a6198..0bb6558c 100644
--- a/lessons/5-NLP/requirements-pytorch.txt
+++ b/lessons/5-NLP/requirements-pytorch.txt
@@ -1,7 +1,7 @@
 gensim==3.8.3
 huggingface==0.0.1
 matplotlib
-nltk==3.5
+nltk==3.9
 numpy==1.22.0
 opencv-python==4.5.1.48
 Pillow==10.3.0
diff --git a/lessons/5-NLP/requirements-tf.txt b/lessons/5-NLP/requirements-tf.txt
index 820e604d..1efe78db 100644
--- a/lessons/5-NLP/requirements-tf.txt
+++ b/lessons/5-NLP/requirements-tf.txt
@@ -1,7 +1,7 @@
 gensim==3.8.3
 huggingface==0.0.1
 matplotlib
-nltk==3.5
+nltk==3.9
 numpy==1.22.0
 opencv-python==4.5.1.48
 Pillow==10.3.0