diff --git a/requirements.txt b/requirements.txt
index 9c2225b..81b0d0a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ click==8.1.3
     #   black
 comm==0.2.0
     # via ipykernel
-contourpy==1.3.3
+contourpy==1.4.0
     # via matplotlib
 coverage==6.5.0
     # via coveralls