diff --git a/Introduction-to-JOJ3.md b/Introduction-to-JOJ3.md
index c4a9593..32c74ab 100644
--- a/Introduction-to-JOJ3.md
+++ b/Introduction-to-JOJ3.md
@@ -47,6 +47,7 @@ git commit -m"fix(h1/e2): allocate memory before using it"  # no online-judge
 git commit -m"feat(h1e2): joj task completed" # run online-judge
 git commit -m"fix(h1/e2): joj fix for test-case 3" # run online-judge
 git commit -m"test(h1/e2): joj ensure all test-cases passed" # run online-judge
+git commit -m"docs(h1): student ids added" # no online-judge
 ```
 
 Invalid commit message: