diff --git a/requirements.txt b/requirements.txt
index 82d7b099..a7285648 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Brotli==1.1.0
 click==8.1.7
 cu2qu==1.6.7.post2
 defcon==0.10.3
-fontMath==0.9.3
+fontMath==0.9.4
 fontParts==0.12.1
 fontPens==0.2.4
 fonttools==4.53.0