diff --git a/src/parser/entity.rs b/src/parser/entity.rs
index 3134e96..fdabd08 100644
--- a/src/parser/entity.rs
+++ b/src/parser/entity.rs
@@ -45,7 +45,11 @@ fn name<'r, 's>(
     // TODO: This should be defined by org-entities and optionally org-entities-user
 
     // TODO: Add the rest of the entities, this is a very incomplete list
-    let (remaining, proto) = alt((alt((tag_no_case("delta"), tag_no_case("pi"))),))(input)?;
+    let (remaining, proto) = alt((alt((
+        tag_no_case("delta"),
+        tag_no_case("pi"),
+        tag_no_case("ast"),
+    )),))(input)?;
     Ok((remaining, proto))
 }