diff --git a/requirements.txt b/requirements.txt
index affaf42..a32b7e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ contourpy==1.1.0
     # via matplotlib
 cycler==0.11.0
     # via matplotlib
-fonttools==4.41.1
+fonttools==4.43.0
     # via matplotlib
 importlib-resources==6.0.0
     # via matplotlib