diff --git a/docs/contribute.rst b/docs/contribute.rst
index 62ed51f9..2e1dc317 100644
--- a/docs/contribute.rst
+++ b/docs/contribute.rst
@@ -75,11 +75,14 @@ via::
 
     invoke tests
 
-In addition to running the test suite, the above invocation will also check code
-style and let you know whether non-conforming patterns were found. In some cases
-these linters will make the needed changes directly, while in other cases you
-may need to make additional changes until ``invoke tests`` no longer reports any
-code style violations.
+In addition to running the test suite, it is important to also ensure that any
+lines you changed conform to code style guidelines. You can check that via::
+
+    invoke lint
+
+If code style violations are found in lines you changed, correct those lines
+and re-run the above lint command until they have all been fixed. You do not
+need to address style violations, if any, for code lines you did not touch.
 
 After making your changes and running the tests, you may see a test failure
 mentioning that "some generated files differ from the expected functional tests
diff --git a/tasks.py b/tasks.py
index 171a9711..1d511859 100644
--- a/tasks.py
+++ b/tasks.py
@@ -70,13 +70,11 @@ def isort(c, check=False, diff=False):
 
 @task
 def flake8(c):
-    c.run(f"{VENV_BIN}/flake8 {PKG_PATH} tasks.py")
+    c.run(f"git diff HEAD | {VENV_BIN}/flake8 --diff --max-line-length=88")
 
 
 @task
 def lint(c):
-    isort(c, check=True)
-    black(c, check=True)
     flake8(c)