diff --git a/languages.toml b/languages.toml
index 8776947a8c507..3cddc3b99b8c1 100644
--- a/languages.toml
+++ b/languages.toml
@@ -3565,7 +3565,7 @@ language-servers = ["earthlyls"]
 
 [[grammar]]
 name = "earthfile"
-source = { git = "https://github.com/glehmann/tree-sitter-earthfile", rev = "a079e6c472eeedd6b9a1e03ca0b6c82cd6a112a4" }
+source = { git = "https://github.com/glehmann/tree-sitter-earthfile", rev = "66a39e130a06dc14049fd6b681f10f5194655f8d" }
 
 [[language]]
 name = "adl"