diff --git a/conductor/tracks/ts_cpp_tree_sitter_20260308/plan.md b/conductor/tracks/ts_cpp_tree_sitter_20260308/plan.md
index 233d694..7f8d99f 100644
--- a/conductor/tracks/ts_cpp_tree_sitter_20260308/plan.md
+++ b/conductor/tracks/ts_cpp_tree_sitter_20260308/plan.md
@@ -15,7 +15,7 @@ Focus: Add tree-sitter C/C++ grammars
 ## Phase 2: ASTParser Extensions
 Focus: Extend ASTParser to support C/C++ languages
 
-- [ ] Task 2.1: Modify ASTParser.__init__ to accept "c" and "cpp" languages
+- [x] Task 2.1: Modify ASTParser.__init__ to accept "c" and "cpp" languages c025ebc
   - WHERE: src/file_cache.py:22-28
   - WHAT: Add language loading for tree-sitter-c and tree-sitter-cpp
   - HOW: Import tree_sitter_c, tree_sitter_cpp; load Language(tree_sitter_c.language()) etc.