diff --git a/initializer.py b/initializer.py
index 1b9d2a3..2879c99 100644
--- a/initializer.py
+++ b/initializer.py
@@ -4,9 +4,10 @@ import logging
 import matplotlib.pyplot as plt
 import pickle
 import sys
-from categories import Categories
-from transaction import Transaction as Tr, TransactionError, Transactions
-from parsers import Parser
+
+from pfbudget.categories import Categories
+from pfbudget.transactions import Transaction as Tr, TransactionError, Transactions
+from pfbudget.parsers import Parser
 
 
 def get_transactions(data_dir):
diff --git a/main.py b/main.py
index be66ae0..be46520 100644
--- a/main.py
+++ b/main.py
@@ -5,9 +5,9 @@ import matplotlib.pyplot as plt
 import pickle
 
 from initializer import initialize
-from categories import Categories
-from transaction import Transaction as Tr, TransactionError, Transactions
-from parsers import Parser
+from pfbudget.categories import Categories
+from pfbudget.transactions import Transaction as Tr, TransactionError, Transactions
+from pfbudget.parsers import Parser
 
 
 p = ".pfbudget.pickle"
diff --git a/pfbudget/__init__.py b/pfbudget/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/categories.py b/pfbudget/categories.py
similarity index 100%
rename from categories.py
rename to pfbudget/categories.py
diff --git a/parsers.py b/pfbudget/parsers.py
similarity index 99%
rename from parsers.py
rename to pfbudget/parsers.py
index ecbb22f..3f9e66c 100644
--- a/parsers.py
+++ b/pfbudget/parsers.py
@@ -1,7 +1,8 @@
 from datetime import datetime
 from decimal import Decimal, InvalidOperation
 from pathlib import Path
-from transaction import Transaction
+
+from .transactions import Transaction
 
 
 class Parser:
diff --git a/transaction.py b/pfbudget/transactions.py
similarity index 99%
rename from transaction.py
rename to pfbudget/transactions.py
index 62eab01..89edb99 100644
--- a/transaction.py
+++ b/pfbudget/transactions.py
@@ -1,8 +1,8 @@
-from categories import Categories
 from csv import reader, writer
 from datetime import date
 from decimal import Decimal, InvalidOperation
 
+from .categories import Categories
 
 class TransactionError(Exception):
     pass