diff --git a/requirements.txt b/requirements.txt
index b61c2c5..4254025 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ appdirs==1.4.4
 attrs==22.1.0
 booleanOperations==0.9.0
 cffsubr==0.2.9.post1
-compreffor==0.5.2
+compreffor==0.5.5
 cu2qu==1.6.7.post1
 fontbakery[freetype]==0.8.10
 fontmake==3.4.0