diff --git a/shared/yeast/src/build.rs b/shared/yeast/src/build.rs
index cda78e69793..a5f454a5f54 100644
--- a/shared/yeast/src/build.rs
+++ b/shared/yeast/src/build.rs
@@ -158,15 +158,6 @@ impl<'a, C> BuildCtx<'a, C> {
         self.ast
             .create_named_token_with_range(kind, generated, self.source_range)
     }
-
-    /// Prepend a value to a field of an existing node.
-    pub fn prepend_field(&mut self, node_id: Id, field_name: &str, value_id: Id) {
-        let field_id = self
-            .ast
-            .field_id_for_name(field_name)
-            .unwrap_or_else(|| panic!("build: field '{field_name}' not found"));
-        self.ast.prepend_field_child(node_id, field_id, value_id);
-    }
 }
 
 impl<C: Clone> BuildCtx<'_, C> {
diff --git a/shared/yeast/src/lib.rs b/shared/yeast/src/lib.rs
index 2c53f756fdf..8a880cef7a2 100644
--- a/shared/yeast/src/lib.rs
+++ b/shared/yeast/src/lib.rs
@@ -518,15 +518,6 @@ impl Ast {
         self.create_named_token_with_range(kind, content, None)
     }
 
-    /// Prepend a child id to the given field of the given node.
-    pub fn prepend_field_child(&mut self, node_id: Id, field_id: FieldId, value_id: Id) {
-        let node = self
-            .nodes
-            .get_mut(node_id.0)
-            .expect("prepend_field_child: invalid node id");
-        node.fields.entry(field_id).or_default().insert(0, value_id);
-    }
-
     pub fn create_named_token_with_range(
         &mut self,
         kind: &'static str,