diff --git a/markdownrunner.py b/markdownrunner.py
index b2975ec..048f441 100755
--- a/markdownrunner.py
+++ b/markdownrunner.py
@@ -3,6 +3,8 @@
 import pandoc
 import pandoc.types as t
 import sys
+from dataclasses import dataclass
+from typing import *
 
 # There are three parts:
 # - Parse a given markdown and extract the commands
@@ -28,7 +30,7 @@ def main():
 @dataclass
 class Command:
 	user: str
-	directory: Any[str, None]
+	directory: Union[str, None]
 	command: str
 	context: str
 
@@ -139,7 +141,7 @@ def user_action(hunk: Sequence[Command], context=None) -> Sequence[Command]:
 			new_hunk = []
 			for line in tmpfile.file.readlines():
 				parts = line.split('\t', maxsplit=3)
-				new_hunk.append(Command(user=parts[0],directory=parts[1],command=parts[2],context=None)
+				new_hunk.append(Command(user=parts[0],directory=parts[1],command=parts[2],context=None))
 		# Python has no goto for restarting, but we can recurse
 		return user_action(new_hunk, context)
 	elif answer.startswith(('y', 'Y')):
@@ -174,7 +176,7 @@ def process_file(fn: str):
 	"""
 	To be called upon each file on the command line. This function should perform all the steps needed in order to remotely run a parsed markdown, id est the three parts above.
 	"""
-	pd = pandoc.read(open(fn))
+	pd = pandoc.read(file=fn)
 	snippets = extract_snippets(pd)
 	for snip in snippets:
 		cmds = parse_snippet(snip)