diff --git a/README.md b/README.md
index e93757e..c9cb22b 100644
--- a/README.md
+++ b/README.md
@@ -178,7 +178,7 @@ Tests are in the `main_test.go` file for golang. You can run them from the comma
 
 ## Optimizations
 
-- [4c4f07e417bc81224d2d739cc4a45255ad648ab5] Use allowlists instead of denylists to validate token sequences.
+- [https://github.com/wbhob/learn-compilers/commit/4c4f07e417bc81224d2d739cc4a45255ad648ab5] Use allowlists instead of denylists to validate token sequences.
 - The parser could be optimized to avoid recursion by using an iterative approach.
 - The interpreter could be optimized to avoid recursion by using an iterative approach.
 - Integers and floats could be parsed separately to avoid using them as loop counts.