diff --git a/pyfstat/__init__.py b/pyfstat/__init__.py
index 9036370f0e8a8472fedbc476d2249f61e934430c..6af2b7e990bbe90d4adf122937cc0f17b260541f 100644
--- a/pyfstat/__init__.py
+++ b/pyfstat/__init__.py
@@ -29,4 +29,5 @@ from .grid_based_searches import (
 
 
 from .helper_functions import get_version_information
+
 __version__ = get_version_information()
diff --git a/pyfstat/helper_functions.py b/pyfstat/helper_functions.py
index 063876a01a1e90a047dd7dc90da88c28c457ac36..806d485db4a4d238d0fcb3c92cfb4b75d1c2e4f9 100644
--- a/pyfstat/helper_functions.py
+++ b/pyfstat/helper_functions.py
@@ -394,9 +394,10 @@ def match_commandlines(cl1, cl2, be_strict_about_full_executable_path=False):
 
 def get_version_information():
     version_file = os.path.join(
-        os.path.dirname(os.path.dirname(__file__)), 'pyfstat/.version')
+        os.path.dirname(os.path.dirname(__file__)), "pyfstat/.version"
+    )
     try:
-        with open(version_file, 'r') as f:
+        with open(version_file, "r") as f:
             return f.readline().rstrip()
     except EnvironmentError:
         print("No version information file '.version' found")
diff --git a/setup.py b/setup.py
index 65bd30650f060ddeaefa715b89b6c1464026514c..64a0f1c53d560cedc9920710b2aff8513348a0a8 100644
--- a/setup.py
+++ b/setup.py
@@ -22,24 +22,25 @@ def write_version_file(version):
     """
     try:
         git_log = subprocess.check_output(
-            ['git', 'log', '-1', '--pretty=%h %ai']).decode('utf-8')
-        git_diff = (subprocess.check_output(['git', 'diff', '.']) +
-                    subprocess.check_output(
-                        ['git', 'diff', '--cached', '.'])).decode('utf-8')
-        if git_diff == '':
-            git_status = '(CLEAN) ' + git_log
+            ["git", "log", "-1", "--pretty=%h %ai"]
+        ).decode("utf-8")
+        git_diff = (
+            subprocess.check_output(["git", "diff", "."])
+            + subprocess.check_output(["git", "diff", "--cached", "."])
+        ).decode("utf-8")
+        if git_diff == "":
+            git_status = "(CLEAN) " + git_log
         else:
-            git_status = '(UNCLEAN) ' + git_log
+            git_status = "(UNCLEAN) " + git_log
     except Exception as e:
-        print("Unable to obtain git version information, exception: {}"
-              .format(e))
-        git_status = ''
+        print("Unable to obtain git version information, exception: {}".format(e))
+        git_status = ""
 
-    version_file = '.version'
+    version_file = ".version"
     if path.isfile(version_file) is False:
-        with open('pyfstat/' + version_file, 'w+') as f:
-            f.write('{}: {}'.format(version, git_status))
-        print('Done', version_file, version, git_status)
+        with open("pyfstat/" + version_file, "w+") as f:
+            f.write("{}: {}".format(version, git_status))
+        print("Done", version_file, version, git_status)
 
     return version_file
 
@@ -61,7 +62,7 @@ here = path.abspath(path.dirname(__file__))
 with open(path.join(here, "README.md"), encoding="utf-8") as f:
     long_description = f.read()
 
-VERSION = '1.3'
+VERSION = "1.3"
 version_file = write_version_file(VERSION)
 
 setup(
@@ -79,7 +80,7 @@ setup(
         "pyfstat": [
             "pyCUDAkernels/cudaTransientFstatExpWindow.cu",
             "pyCUDAkernels/cudaTransientFstatRectWindow.cu",
-            version_file
+            version_file,
         ]
     },
     python_requires=">=%s.%s.%s" % min_python_version[:3],