diff --git a/libs/cli/langgraph_cli/docker.py b/libs/cli/langgraph_cli/docker.py
index d3d417ddb..dc6ac245e 100644
--- a/libs/cli/langgraph_cli/docker.py
+++ b/libs/cli/langgraph_cli/docker.py
@@ -49,7 +49,9 @@ def check_capabilities(runner) -> DockerCapabilities:
         raise click.UsageError("Docker not installed") from None
 
     try:
-        stdout, _ = runner.run(subp_exec("docker", "info", "-f", "{{json .}}", collect=True))
+        stdout, _ = runner.run(
+            subp_exec("docker", "info", "-f", "{{json .}}", collect=True)
+        )
         info = json.loads(stdout)
     except (click.exceptions.Exit, json.JSONDecodeError):
         raise click.UsageError("Docker not installed or not running") from None