diff --git a/requirements.txt b/requirements.txt
index f2bca1d3..4edf8aac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ matplotlib==3.3.0
 mercurial==5.4.2
 microannotate==0.0.20
 mozci==1.6.4
-numpy==1.19.0
+numpy==1.19.1
 orjson==3.3.0
 ortools==7.7.7810
 pandas==1.0.5