diff --git a/PythonCode/Python2_conda_requirements.txt b/PythonCode/Python2_conda_requirements.txt
index 8b6ee65f..6d70079c 100644
--- a/PythonCode/Python2_conda_requirements.txt
+++ b/PythonCode/Python2_conda_requirements.txt
@@ -5,6 +5,6 @@ statsmodels==0.6.1
 matplotlib==1.5.3
 statsmodels==0.6.1
 scikit-learn==0.18.1
-numpy==1.11.1
+numpy==1.21.0
 pandas==0.19.2
 scipy==0.18.1