diff --git a/requirements.txt b/requirements.txt
index 1a8c515..054ec38 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ afdko==4.0.3
 cffsubr==0.4.0
 defcon==0.12.2
 dehinter>=4.0.0
-fonttools[woff,pathops,unicode]==4.65.0
+fonttools[woff,pathops,unicode]==4.66.0
 setuptools==84.0.0
 ttfautohint-py==0.6.1
 ufo-extractor==0.8.1