diff --git a/lapce-core/src/language.rs b/lapce-core/src/language.rs
index fda4bf69..4b84ac7c 100644
--- a/lapce-core/src/language.rs
+++ b/lapce-core/src/language.rs
@@ -256,7 +256,7 @@ pub enum LapceLanguage {
         comment: "#",
         indent: "  ",
         code_lens: (DEFAULT_CODE_LENS_LIST, DEFAULT_CODE_LENS_IGNORE_LIST),
-        extensions: &["ex"],
+        extensions: &["ex", "exs", "eex", "heex", "sface"],
     },
     #[cfg(feature = "lang-c")]
     SyntaxProperties {