diff --git a/README.md b/README.md
index 35255ee1..2bbab910 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,8 @@ Lrama is LALR (1) parser generator written by Ruby. The first goal of this proje
 * [Development](#development)
   * [How to generate parser.rb](#how-to-generate-parserrb)
   * [Test](#test)
-  * [Profiling Lrama](#profiling-lrama)
+  * [Call-stack Profiling Lrama](#call-stack-profiling-lrama)
+  * [Memory Profiling Lrama](#memory-profiling-lrama)
   * [Build Ruby](#build-ruby)
 * [Release flow](#release-flow)
 * [License](#license)