diff --git a/requirements.txt b/requirements.txt
index ba2c4b28..18bb1568 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ defcon==0.10.2
 fontMath==0.9.2
 fontParts==0.10.7
 fontPens==0.2.4
-fonttools==4.34.4
+fonttools==4.43.0
 fs==2.4.16
 lxml==4.9.1
 MutatorMath==3.0.1