diff --git a/.gitignore b/.gitignore
index cf0445b..e66f245 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 stock-data/
 readme.txt
 *.pickle
+*.pkl
 *.html
diff --git a/program.py b/program.py
index 465bf00..636ab21 100644
--- a/program.py
+++ b/program.py
@@ -10,8 +10,8 @@
 
 SCRIPT_LOC = os.path.join(os.path.dirname(os.path.realpath(__file__)))
 CIK_CSV_LOC = os.path.join(SCRIPT_LOC, 'cik.csv')
-PICKLE_LOC_1 = os.path.join(SCRIPT_LOC, 'cik_dataframe.pickle')
-PICKLE_LOC_2 = os.path.join(SCRIPT_LOC, 'sec_dataframe.pickle')
+PICKLE_LOC_1 = os.path.join(SCRIPT_LOC, 'cik_dataframe.pkl')
+PICKLE_LOC_2 = os.path.join(SCRIPT_LOC, 'sec_dataframe.pkl')
 HTML_LOC = os.path.join(SCRIPT_LOC, 'tables.html')
 
 HTML_COLUMNS = [