diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c18dd8d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+__pycache__/
diff --git a/readmdict.py b/readmdict.py
index 4bdc375..596c309 100644
--- a/readmdict.py
+++ b/readmdict.py
@@ -631,11 +631,11 @@ def passcode(s):
 
     # use GUI to select file, default to extract
     if not args.filename:
-        import Tkinter
-        import tkFileDialog
-        root = Tkinter.Tk()
+        import tkinter
+        import tkinter.filedialog
+        root = tkinter.Tk()
         root.withdraw()
-        args.filename = tkFileDialog.askopenfilename(parent=root)
+        args.filename = tkinter.filedialog.askopenfilename(parent=root)
         args.extract = True
 
     if not os.path.exists(args.filename):