diff --git a/pyproject.toml b/pyproject.toml
index 6daf90b..d65f307 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
 ]
 dependencies= [
-"gflanguages >=0.6.1",
+"gflanguages >=0.6.3",
 "termcolor >=2.4.0",
 "vharfbuzz",
 "strictyaml",