diff --git a/requirements.txt b/requirements.txt
index 42089fc..44cafb1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ mkl
 more-itertools==8.3.0
 mpmath==1.1.0
 nexusformat==0.5.3
-numpy==1.18.5
+numpy==1.22.0
 packaging==20.4
 pip==20.1.1
 pluggy==0.13.1