diff --git a/Aspect_Extraction_systems/Xu_et_al_DE_CNN_system/requirements.txt b/Aspect_Extraction_systems/Xu_et_al_DE_CNN_system/requirements.txt
index 36f0a7f..8b5875a 100644
--- a/Aspect_Extraction_systems/Xu_et_al_DE_CNN_system/requirements.txt
+++ b/Aspect_Extraction_systems/Xu_et_al_DE_CNN_system/requirements.txt
@@ -12,7 +12,7 @@ jmespath==0.10.0
 joblib==0.16.0
 Keras==2.4.3
 nltk==3.5
-numpy==1.19.0
+numpy==1.22.0
 pandas==1.0.5
 python-dateutil==2.8.1
 pytz==2020.1