diff --git a/combo/data/dataset.py b/combo/data/dataset.py
index 9aabe1912896b8990bacea6d36699a5f3a4839f6..870659fe27857d157e5061f77690f61f166330a7 100644
--- a/combo/data/dataset.py
+++ b/combo/data/dataset.py
@@ -82,8 +82,8 @@ class UniversalDependenciesDatasetReader(allen_data.DatasetReader):
         for conllu_file in file_path:
             file = pathlib.Path(conllu_file)
             assert conllu_file and file.exists(), f"File with path '{conllu_file}' does not exists!"
-            with file.open("r"):
-                for annotation in conllu.parse_incr(file, fields=self.fields, field_parsers=self.field_parsers):
+            with file.open("r") as f:
+                for annotation in conllu.parse_incr(f, fields=self.fields, field_parsers=self.field_parsers):
                     yield self.text_to_instance(annotation)
 
     @overrides
diff --git a/setup.py b/setup.py
index 0779eaf0c59862932225cf13dacdeab079810994..0c8c371d4db9021d32d7bc8acd01c90a3c6e9bb5 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ REQUIREMENTS = [
 
 setup(
     name='combo',
-    version='1.0.0b3',
+    version='1.0.0b4',
     author='Mateusz Klimaszewski',
     author_email='M.Klimaszewski@ii.pw.edu.pl',
     install_requires=REQUIREMENTS,