diff --git a/requirements-test.txt b/requirements-test.txt
index fb84e20..dfc5234 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -2,7 +2,7 @@ requests==2.32.3
 transformers==4.42.4
 fastapi==0.112.0
 uvicorn==0.30.5
-nltk==3.8.1
+nltk==3.9.1
 torch==2.4.0
 sentencepiece==0.2.0
 sentence-transformers==3.0.1
diff --git a/requirements.txt b/requirements.txt
index 88fd174..d2c8e98 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 transformers==4.42.4
 fastapi==0.112.0
 uvicorn==0.30.5
-nltk==3.8.1
+nltk==3.9.1
 torch==2.4.0
 sentencepiece==0.2.0
 sentence-transformers==3.0.1