diff --git a/requirements.txt b/requirements.txt
index 5066eee..4fe5aaa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -127,7 +127,7 @@ nest_asyncio @ file:///home/conda/feedstock_root/build_artifacts/nest-asyncio_17
 networkx==3.3
 nh3==0.2.17
 ninja==1.11.1.1
-nltk==3.8.1
+nltk==3.9
 numexpr==2.10.0
 numpy @ file:///private/var/folders/k1/30mswbxs7r1g6zwn8y4fyt500000gp/T/abs_a51i_mbs7m/croot/numpy_and_numpy_base_1708638620867/work/dist/numpy-1.26.4-cp311-cp311-macosx_11_0_arm64.whl#sha256=3d90dd3382cff7becb2384f73058a8e72b81c697e8bb77f1c69a82caca5b0c57
 nvidia-ml-py==12.555.43