diff --git a/reana/reana_dev/cluster.py b/reana/reana_dev/cluster.py
index 8ec4c7c3..583c24d5 100644
--- a/reana/reana_dev/cluster.py
+++ b/reana/reana_dev/cluster.py
@@ -78,9 +78,12 @@ def cluster_commands():
 @click.option(
     "--kind-version",
     default=KIND_IMAGE_VERSION,
-    help=f"Which kindest/node image version to use? [default={KIND_IMAGE_VERSION}]")
+    help=f"Which kindest/node image version to use? [default={KIND_IMAGE_VERSION}]",
+)
 @cluster_commands.command(name="cluster-create")
-def cluster_create(mounts, mode, worker_nodes, disable_default_cni, kind_version):  # noqa: D301
+def cluster_create(
+    mounts, mode, worker_nodes, disable_default_cni, kind_version
+):  # noqa: D301
     """Create new REANA cluster.
 
     \b