diff --git a/requirements.txt b/requirements.txt
index ba02cbb..423b49e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ fontbakery==0.9.0
 fontFeatures==1.8.0
 fontmake==3.7.1
 fontMath==0.9.3
-fonttools==4.42.1
+fonttools==4.43.0
 freetype-py==2.3.0
 fs==2.4.16
 gflanguages==0.5.6