diff --git a/bokeh-flask/requirements.txt b/bokeh-flask/requirements.txt
index 2f39e4e..f1662c1 100644
--- a/bokeh-flask/requirements.txt
+++ b/bokeh-flask/requirements.txt
@@ -18,7 +18,7 @@ jmespath==0.9.3
 kappa==0.6.0
 lambda-packages==0.20.0
 MarkupSafe==1.1.0
-numpy==1.16.0
+numpy==1.22.0
 pandas==0.23.4
 placebo==0.8.2
 python-dateutil==2.6.1