diff --git a/requirements.txt b/requirements.txt
index 12fde28..3820057 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ etils==0.6.0
 fastjsonschema==2.15.3
 flatbuffers==1.12
 flax==0.5.0
-fonttools==4.33.3
+fonttools==4.43.0
 gast==0.4.0
 google-auth==2.6.6
 google-auth-oauthlib==0.4.6