diff --git a/4_alpha_research_and_factor_modeling/requirements.txt b/4_alpha_research_and_factor_modeling/requirements.txt
index 5d18d29..750d177 100644
--- a/4_alpha_research_and_factor_modeling/requirements.txt
+++ b/4_alpha_research_and_factor_modeling/requirements.txt
@@ -2,7 +2,7 @@ alphalens==0.3.2
 colour==0.1.5
 cvxpy==1.0.3
 cycler==0.10.0
-numpy==1.13.3
+numpy==1.22.0
 pandas==0.18.1
 plotly==2.2.3
 pyparsing==2.2.0