diff --git a/requirements.txt b/requirements.txt
index 305db37..a411090 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ toml==0.10.1
 zipp==3.4.0
 mutmut==2.1.0
 pdoc3==0.9.2
-numpy==1.20.0
+numpy==1.21.0
 matplotlib==3.4.2
 chardet==4.0.0
 clang==11.0