diff --git a/heat/__init__.py b/heat/__init__.py
index 20911f3..18a6399 100644
--- a/heat/__init__.py
+++ b/heat/__init__.py
@@ -1,4 +1,5 @@
 """Model the diffusion of heat over a 2D plate."""
+
 from ._version import __version__
 from .bmi_heat import BmiHeat
 from .heat import Heat, solve_2d
diff --git a/heat/bmi_heat.py b/heat/bmi_heat.py
index 310855a..54dc81f 100644
--- a/heat/bmi_heat.py
+++ b/heat/bmi_heat.py
@@ -8,7 +8,6 @@
 
 
 class BmiHeat(Bmi):
-
     """Solve the heat equation for a 2D plate."""
 
     _name = "The 2D Heat Equation"
diff --git a/heat/heat.py b/heat/heat.py
index e940511..aed5eb2 100644
--- a/heat/heat.py
+++ b/heat/heat.py
@@ -54,7 +54,6 @@ def solve_2d(temp, spacing, out=None, alpha=1.0, time_step=1.0):
 
 
 class Heat(object):
-
     """Solve the Heat equation on a grid.
 
     Examples