diff --git a/.travis.yml b/.travis.yml
index 12145a8..cfba9b6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -49,7 +49,7 @@ script:
   - cd Rmagic; R CMD build .
   - R CMD check *tar.gz
   - cd ../python; pip install --user -q .[test]
-  - if [ "$TRAVIS_PYTHON_VERSION" != "3.5" ]; then black . --check --diff; fi
+  - if [ "$TRAVIS_PYTHON_VERSION" != "3.5" ]; then black . --check --diff -t py35; fi
   - python setup.py test
   - pip install --user -q .[doc]
   - cd doc; make html; cd ..
diff --git a/autoblack.sh b/autoblack.sh
index cfbaf2b..981a7b4 100644
--- a/autoblack.sh
+++ b/autoblack.sh
@@ -6,7 +6,7 @@ set -e
 files=\$(git diff --staged --name-only --diff-filter=d -- "*.py")
 
 for file in \$files; do
-  black -q \$file
+  black -q -t py35 \$file
   git add \$file
 done
 EOF
diff --git a/python/magic/io.py b/python/magic/io.py
index dd23dd2..aadbf6d 100644
--- a/python/magic/io.py
+++ b/python/magic/io.py
@@ -16,7 +16,7 @@ def load_csv(
     **kwargs
 ):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
@@ -35,7 +35,7 @@ def load_tsv(
     **kwargs
 ):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
@@ -60,7 +60,7 @@ def load_fcs(
     ],
 ):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
@@ -71,7 +71,7 @@ def load_fcs(
 
 def load_mtx(mtx_file, cell_axis="row", gene_names=None, cell_names=None, sparse=None):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
@@ -82,7 +82,7 @@ def load_mtx(mtx_file, cell_axis="row", gene_names=None, cell_names=None, sparse
 
 def load_10X(data_dir, sparse=True, gene_labels="symbol", allow_duplicates=None):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
@@ -93,7 +93,7 @@ def load_10X(data_dir, sparse=True, gene_labels="symbol", allow_duplicates=None)
 
 def load_10X_zip(filename, sparse=True, gene_labels="symbol", allow_duplicates=None):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
@@ -106,7 +106,7 @@ def load_10X_HDF5(
     filename, genome=None, sparse=True, gene_labels="symbol", allow_duplicates=None
 ):
     """magic.io is deprecated. Please use scprep.io instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.io is deprecated. Please use scprep.io instead. "
diff --git a/python/magic/magic.py b/python/magic/magic.py
index 8f9d071..65c02bc 100644
--- a/python/magic/magic.py
+++ b/python/magic/magic.py
@@ -925,6 +925,6 @@ def knnDREMI(
             n_mesh=n_mesh,
             n_jobs=n_jobs,
             plot=plot,
-            **kwargs
+            **kwargs,
         )
         return dremi
diff --git a/python/magic/preprocessing.py b/python/magic/preprocessing.py
index 6ce983c..a16e87b 100644
--- a/python/magic/preprocessing.py
+++ b/python/magic/preprocessing.py
@@ -8,7 +8,7 @@
 
 def library_size_normalize(data, verbose=False):
     """magic.preprocessing is deprecated. Please use scprep.normalize instead.
-       Read more at http://scprep.readthedocs.io/
+    Read more at http://scprep.readthedocs.io/
     """
     raise RuntimeError(
         "magic.preprocessing is deprecated. Please use scprep.normalize instead. "
diff --git a/python/setup.py b/python/setup.py
index 413fffe..9535e4a 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -42,7 +42,9 @@
     description="MAGIC",
     author="",
     author_email="",
-    packages=["magic",],
+    packages=[
+        "magic",
+    ],
     license="GNU General Public License Version 2",
     install_requires=install_requires,
     extras_require={"test": test_requires, "doc": doc_requires},