diff --git a/deploy.py b/deploy.py
index c4c00f0..edea81a 100755
--- a/deploy.py
+++ b/deploy.py
@@ -207,7 +207,9 @@ def main():
     # ensure GRAFANA_TOKEN
     grafana_token = os.environ.get("GRAFANA_TOKEN")
     if not grafana_token:
-        raise ValueError("The environment variable GRAFANA_TOKEN needs to be set in order to deploying dashboards to a Grafana deployment.")
+        raise ValueError(
+            "The environment variable GRAFANA_TOKEN needs to be set in order to deploying dashboards to a Grafana deployment."
+        )
 
     # ensure jsonnet (go-jsonnet)
     if not shutil.which("jsonnet"):