diff --git a/tests/requirements.txt b/tests/requirements.txt
index f1c2c289e09..97eea094587 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -12,6 +12,7 @@ git+https://github.com/intel/neural-compressor.git
 git+https://github.com/intel/neural-speed.git
 intel-extension-for-pytorch==2.3.0
 intel-tensorflow==2.14.0
+nltk==3.8.1
 lm-eval==0.4.3
 mlflow
 nlpaug==1.1.9