diff --git a/__pycache__/database.cpython-38.pyc b/__pycache__/database.cpython-38.pyc
new file mode 100644
index 0000000..27cc417
Binary files /dev/null and b/__pycache__/database.cpython-38.pyc differ
diff --git a/__pycache__/validation.cpython-38.pyc b/__pycache__/validation.cpython-38.pyc
new file mode 100644
index 0000000..44ed544
Binary files /dev/null and b/__pycache__/validation.cpython-38.pyc differ
diff --git a/auth.py b/auth.py
index dc7629f..9bda8f4 100644
--- a/auth.py
+++ b/auth.py
@@ -15,6 +15,7 @@
 import database
 from getpass import getpass
 
+account_number_from_user = None
 
 def init():
     print("Welcome to bankPHP")
@@ -37,6 +38,7 @@ def init():
 def login():
     print("********* Login ***********")
 
+    global account_number_from_user
     account_number_from_user = input("What is your account number? \n")
 
     is_valid_account_number = validation.account_number_validation(account_number_from_user)
@@ -92,7 +94,7 @@ def bank_operation(user):
 
     if selected_option == 1:
 
-        deposit_operation()
+        deposit_operation(user)
     elif selected_option == 2:
 
         withdrawal_operation()
@@ -117,8 +119,21 @@ def withdrawal_operation():
     # display current balance
 
 
-def deposit_operation():
-    print("Deposit Operations")
+def deposit_operation(user):
+    
+    current_balance = int(get_current_balance(user))
+    amount_to_deposit = int(input("How much do you want to deposit? "))
+    current_balance += amount_to_deposit
+    set_current_balance(user, str(current_balance))
+
+    if database.update(account_number_from_user, user):
+        print("Your account balance is {}".format(current_balance))
+        bank_operation(user)
+    
+    else:
+        print("Transaction not successful")
+        bank_operation(user)
+
     # get current balance
     # get amount to deposit
     # add deposited amount to current balance
diff --git a/data/user_record/6277302096.txt b/data/user_record/6277302096.txt
new file mode 100644
index 0000000..dfb9cfe
--- /dev/null
+++ b/data/user_record/6277302096.txt
@@ -0,0 +1 @@
+Test,User,test@user.com,testuser,550
\ No newline at end of file
diff --git a/database.py b/database.py
index 0a40169..b4ab516 100644
--- a/database.py
+++ b/database.py
@@ -10,6 +10,7 @@
 import validation
 
 user_db_path = "data/user_record/"
+auth_session_path = "data/auth_session"
 
 
 def create(user_account_number, first_name, last_name, email, password):
@@ -44,12 +45,12 @@ def create(user_account_number, first_name, last_name, email, password):
 
     else:
 
-        f.write(str(user_data));
+        f.write(str(user_data))
         completion_state = True
 
     finally:
 
-        f.close();
+        f.close()
         return completion_state
 
 
@@ -85,14 +86,16 @@ def read(user_account_number):
     return False
 
 
-def update(user_account_number):
-    print("update user record")
-    # find user with account number
-    # fetch the content of the file
-    # update the content of the file
-    # save the file
-    # return true
+def update(user_account_number, user_details):
 
+    user = user_details[0] + "," + user_details[1] + "," + user_details[2] + "," + user_details[3] + "," + user_details[4]
+    
+    try:
+        f = open(user_db_path + str(user_account_number) + ".txt", "w")
+        f.write(user)
+        return True
+    except:
+        return False
 
 def delete(user_account_number):