diff --git a/requirements_dev.txt b/requirements_dev.txt
index e96f220..1ac4434 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ tox==3.5.2
 coverage==4.5.1
 Sphinx==1.8.1
 twine==1.12.1
-numpy==1.16.4
+numpy==1.22.0
 
 pytest==3.8.2
 pytest-runner==4.2