diff --git a/requirements.txt b/requirements.txt
index 1b6d57a..c5b41bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pint==0.11
-numpy==1.18.2
+numpy==1.22.0
 xlrd==1.2.0
 nose==1.3.7
 sphinx==3.0.1