diff --git a/time_operator/requirements.txt b/time_operator/requirements.txt
index 6b85f78..c1726d9 100644
--- a/time_operator/requirements.txt
+++ b/time_operator/requirements.txt
@@ -1,3 +1,3 @@
 # Dependencies
 ujson==2.0.3
-numpy==1.18.2
+numpy==1.22.0