diff --git a/requirements.txt b/requirements.txt
index 494ca7e..7653d4b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 bidict==0.17.5
-numpy==1.15.4
+numpy==1.22.0
 numpydoc==0.8.0
 overrides==1.9
 pytest==4.0.2