diff --git a/Projects/1-Beginner/Calendar-App.md b/Projects/1-Beginner/Calendar-App.md
index 8fe6d8f5..10f54eaf 100644
--- a/Projects/1-Beginner/Calendar-App.md
+++ b/Projects/1-Beginner/Calendar-App.md
@@ -1,12 +1,13 @@
 # My calendar
 
-**Tier:** 1-Beginner
+**Tier:** 3-Advanced
 
 Build a calendar application to organize you daily life. Add functionality to add events and reminder.
 Style your own calendar according to your requirement
 
 - Understanding how calendar application works
 - Only basic understanding of HTML/CSS and JS is required
+- Working on more features help you learning advance concepts of JS
 
 ## User Stories
 
diff --git a/README.md b/README.md
index 1ba8b087..c684def3 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,6 @@ required to complete them.
 | [Vigenere Cipher](./Projects/1-Beginner/Vigenere-Cipher.md)                       | Encrypt text using the Vigenere Cypher                     | 1-Beginner |
 | [Wind Chill](./Projects/1-Beginner/Windchill-App.md)                              | Calculate the windchill factor from an actual temperature  | 1-Beginner |
 | [Word Frequency](./Projects/1-Beginner/Word-Frequency-App.md)                     | Calculate word frequency in a block of text                | 1-Beginner |
-| [Calendar](./Projects/1-Beginner/Calendar-App.md)                                 | Create your own Calendar                                   | 1-Beginner |
 
 ### Tier-2: Intermediate Projects
 
@@ -130,6 +129,7 @@ required to complete them.
 | [Slack Archiver](./Projects/3-Advanced/Slack-Archiver.md)                     | Archive Slack Messages                                              | 3-Advanced |
 | [Spell-It App](./Projects/3-Advanced/SpellIt-App.md)                          | A twist on the classic Speak N Spell game                           | 3-Advanced |
 | [Survey App](./Projects/3-Advanced/Survey-App.md)                             | Define, conduct, and view a survey                                  | 3-Advanced |
+| [Calendar](./Projects/1-Beginner/Calendar-App.md)                             | Create your own Calendar                                            | 3-Advanced |
 
 ## Plans for the future