diff --git a/vendor/pipenv-to-pip b/vendor/pipenv-to-pip
index 9f28424..3bc91c5 100755
--- a/vendor/pipenv-to-pip
+++ b/vendor/pipenv-to-pip
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+import io
 import json
 import sys
 
@@ -7,7 +8,7 @@ import sys
 def main():
     INFILE = sys.argv[1]
 
-    with open(INFILE, 'rb') as f:
+    with io.open(INFILE, 'r', encoding='utf-8') as f:
         lockfile = json.load(f)
 
     packages = []