diff --git a/.gitignore b/.gitignore
index 14fdd76..94cd420 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,3 +66,5 @@ target/
 
 # Vscode config
 .vscode
+.env
+venv/
diff --git a/pypaystack/transactions.py b/pypaystack/transactions.py
index 67e4e7f..f55784d 100644
--- a/pypaystack/transactions.py
+++ b/pypaystack/transactions.py
@@ -38,7 +38,7 @@ def totals(self):
         return self._handle_request("GET", url)
 
     def initialize(
-        self, email, amount, plan=None, reference=None, channel=None, metadata=None
+        self, email, amount, plan=None, reference=None, channel=None, metadata=None, currency=None
     ):
         """
         Initialize a transaction and returns the response
@@ -50,6 +50,7 @@ def initialize(
         Reference -- optional
         channel -- channel type to use
         metadata -- a list if json data objects/dicts
+        currency -- currency to charge eg USD
         """
         amount = utils.validate_amount(amount)
 
@@ -70,10 +71,12 @@ def initialize(
             payload.update({"reference": reference})
         if metadata:
             payload = payload.update({"metadata": {"custom_fields": metadata}})
+        if currency:
+            payload.update({"currency": currency})
 
         return self._handle_request("POST", url, payload)
 
-    def charge(self, email, auth_code, amount, reference=None, metadata=None):
+    def charge(self, email, auth_code, amount, reference=None, metadata=None, currency=None):
         """
         Charges a customer and returns the response
 
@@ -103,7 +106,8 @@ def charge(self, email, auth_code, amount, reference=None, metadata=None):
             payload.update({"reference": reference})
         if metadata:
             payload.update({"metadata": {"custom_fields": metadata}})
-
+        if currency:
+            payload.update({"currency": currency})
         return self._handle_request("POST", url, payload)
 
     def verify(self, reference):
diff --git a/tests/test_00_transaction.py b/tests/test_00_transaction.py
index 83e19c6..0b49a14 100644
--- a/tests/test_00_transaction.py
+++ b/tests/test_00_transaction.py
@@ -13,17 +13,33 @@ def test_charge_and_verify(self):
         """
         transaction_details = {
             "amount": 1000*100,
-            "email": "test_customer@mail.com"
+            "email": "test_customer@mail.com",
+        }
+
+        dollar_transaction_details = {
+            "amount": 200 * 100,
+            "email": "test.customer@mail.com",
+            "currency": "USD"
         }
 
         def initialize_transaction():
             (status_code, status, response_msg,
              initialized_transaction_data) = self.transaction.initialize(**transaction_details)
+             
             self.assertEqual(status_code, 200)
             self.assertEqual(status, True)
             self.assertEqual(response_msg, 'Authorization URL created')
             return initialized_transaction_data
 
+        def initialize_dollar_transaction():
+            (status_code, status, response_msg,
+            initialized_dollar_transaction_data) = self.transaction.initialize(**dollar_transaction_details)
+             
+            self.assertEqual(status_code, 200)
+            self.assertEqual(status, True)
+            self.assertEqual(response_msg, 'Authorization URL created')
+            return initialized_dollar_transaction_data
+
         def verify_transaction():
             (status_code, status, response_msg, response_data) = self.transaction.verify(
                 reference=initialized_transaction_data['reference'])
@@ -33,5 +49,18 @@ def verify_transaction():
             self.assertEqual(response_data.get('customer')
                              ['email'], transaction_details['email'])
 
+        def verify_dollar_transaction():
+            (status_code, status, response_msg, response_data) = self.transaction.verify(
+                reference=initialized_dollar_transaction_data['reference'])
+            self.assertEqual(status_code, 200)
+            self.assertEqual(status, True)
+            self.assertEqual(response_msg, 'Verification successful')
+            self.assertEqual(response_data.get('customer')
+                             ['email'], dollar_transaction_details['email'])
+
+
         initialized_transaction_data = initialize_transaction()
         verify_transaction()
+
+        initialized_dollar_transaction_data = initialize_dollar_transaction()
+        verify_dollar_transaction()