diff --git a/Makefile b/Makefile
index 8032001..dcb442f 100644
--- a/Makefile
+++ b/Makefile
@@ -22,13 +22,15 @@ flake8:
 
 isort-check:
 	isort --case-sensitive --check-only --line-width=88 --multi-line=3 \
-	      --thirdparty=abjad --thirdparty=abjadext --thirdparty=baca \
-	      --thirdparty=ply --thirdparty=uqbar --trailing-comma --use-parentheses .
+		  --project=rmakers --thirdparty=abjad --thirdparty=abjadext \
+		  --thirdparty=baca --thirdparty=ply --thirdparty=uqbar \
+		  --trailing-comma --use-parentheses .
 
 isort-reformat:
 	isort --case-sensitive --line-width=88 --multi-line=3 \
-	      --thirdparty=abjad --thirdparty=abjadext --thirdparty=baca \
-	      --thirdparty=ply --thirdparty=uqbar --trailing-comma --use-parentheses .
+	      --project=rmakers --thirdparty=abjad --thirdparty=abjadext \
+		  --thirdparty=baca --thirdparty=ply --thirdparty=uqbar \
+		  --trailing-comma --use-parentheses .
 
 mypy:
 	mypy source
diff --git a/conftest.py b/conftest.py
index 37cdae8..fb8f057 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,5 +1,6 @@
 import abjad
 import pytest
+
 import rmakers
 
 
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
index 5ca6ed7..778bb56 100644
--- a/tests/test_exceptions.py
+++ b/tests/test_exceptions.py
@@ -1,5 +1,6 @@
 import abjad
 import pytest
+
 import rmakers
 
 
diff --git a/tests/test_tags.py b/tests/test_tags.py
index 5a6e79a..abce703 100644
--- a/tests/test_tags.py
+++ b/tests/test_tags.py
@@ -1,4 +1,5 @@
 import abjad
+
 import rmakers