diff --git a/requirements.txt b/requirements.txt
index 4104b91..77ae278 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ matplotlib==3.1.2
 mpi4py==3.0.3
 mtspec==0.3.2
 numdifftools==0.9.39
-numpy==1.16.5
+numpy==1.22.0
 obspy==1.1.0
 pandas==0.25.3
 parso==0.5.2