diff --git a/README.md b/README.md
index d5040ba..723e141 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,9 @@ A one-stop Git repository for third year SPPU Computer Engineering students foll
 
 1. [Unit 1 - Introduction to Database Management Systems and ER Model](https://git.kska.io/sppu-te-comp-content/DatabaseManagementSystems/src/branch/main/Notes/Unit%201)
 2. [Unit 2 - SQL and PL/SQL](https://git.kska.io/sppu-te-comp-content/DatabaseManagementSystems/src/branch/main/Notes/Unit%202)
+3. [Unit 3]
+4. [Unit 4 - Database Transaction Management](https://git.kska.io/sppu-te-comp-content/DatabaseManagementSystems/src/branch/main/Notes/Unit%204)
+5. [Unit 5 - NoSQL Databases](https://git.kska.io/sppu-te-comp-content/DatabaseManagementSystems/src/branch/main/Notes/Unit%205)
 
 ### Practical