diff --git a/myapp/__main__.py b/myapp/__main__.py
index 6cfbf39..b2afdcf 100644
--- a/myapp/__main__.py
+++ b/myapp/__main__.py
@@ -7,6 +7,8 @@
 # for `making_your_first_app.rst` in ARMI documentation.
 # (That's also why the imports aren't all at the top)
 
+# ruff: noqa: E402
+
 # tutorial-configure-start
 import armi
 
diff --git a/myapp/fluxSolver.py b/myapp/fluxSolver.py
index 1f54ad2..9889adc 100644
--- a/myapp/fluxSolver.py
+++ b/myapp/fluxSolver.py
@@ -27,6 +27,6 @@ def setFakePower(core):
             coords = b.spatialLocator.getGlobalCoordinates()
             r = np.linalg.norm(abs(coords - center))
             fuelFlag = 10 if b.isFuel() else 1.0
-            b.p.power = peakPower / r ** 2 * fuelFlag / b.getSymmetryFactor()
+            b.p.power = peakPower / r**2 * fuelFlag / b.getSymmetryFactor()
             b.p.pdens = b.p.power / vol
             b.p.mgFlux = mgFluxBase * b.p.pdens
diff --git a/myapp/settings.py b/myapp/settings.py
index 38a6ce5..89e59d6 100644
--- a/myapp/settings.py
+++ b/myapp/settings.py
@@ -1,6 +1,6 @@
 """Settings related to the DummyPhysicsPlugin"""
 
-from armi.operators.settingsValidation import Query, validateVersion
+from armi.operators.settingsValidation import Query
 from armi.settings import setting
 
 
diff --git a/setup.py b/setup.py
index f6bd742..2bd3445 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
 
 setup(
     name="armi-example-app",
-    version=__version__,
+    version=__version__,  # noqa: F821
     description="A simple example application built using the Advanced Reactor "
     "Modeling Interface (ARMI)",
     author="TerraPower, LLC",