diff --git a/pyproject.toml b/pyproject.toml
index 8032e3b16..20a174a2e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
     "fontTools[unicode,woff,lxml,ufo] >= 4.43.0",
     "tqdm >= 4.66.1",
     "ufonormalizer >= 0.6.1",
-    "ufoProcessor >= 1.9.0",
+    "ufoProcessor >= 1.13.1",
 ]
 
 [project.urls]