diff --git a/requirements.txt b/requirements.txt
index c3fa2b8..7b9207a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ fontbakery==0.8.13
 fontFeatures==1.8.0
 fontmake==3.6.1
 fontMath==0.9.3
-fonttools==4.41.1
+fonttools==4.43.0
 freetype-py==2.4.0
 fs==2.4.16
 gflanguages==0.8.9