diff --git a/Hierarchical multi-label classification/requirements.txt b/Hierarchical multi-label classification/requirements.txt
index da6f550..5bf5dac 100644
--- a/Hierarchical multi-label classification/requirements.txt	
+++ b/Hierarchical multi-label classification/requirements.txt	
@@ -5,7 +5,7 @@ h5py==2.6.0
 Keras==1.1.2
 matplotlib==1.5.1
 mock==2.0.0
-numpy==1.15.2
+numpy==1.22.0
 pandas==0.18.0
 pbr==1.10.0
 protobuf==3.1.0