diff --git a/cli/update/update.go b/cli/update/update.go
index 42b6280ba93..f4245fea9b6 100644
--- a/cli/update/update.go
+++ b/cli/update/update.go
@@ -42,7 +42,7 @@ func NewCommand() *cobra.Command {
 		Args:    cobra.NoArgs,
 		Run:     runUpdateCommand,
 	}
-	updateCommand.Flags().BoolVar(&updateFlags.showOutdated, "outdated", false, "Show outdated cores and libraries after index update")
+	updateCommand.Flags().BoolVar(&updateFlags.showOutdated, "show-outdated", false, "Show outdated cores and libraries after index update")
 	return updateCommand
 }
 
diff --git a/test/test_update.py b/test/test_update.py
index 84b547e3784..d08580e7666 100644
--- a/test/test_update.py
+++ b/test/test_update.py
@@ -38,7 +38,7 @@ def test_update_showing_outdated(run_command):
     assert run_command("lib install ArduinoJson")
 
     # Verifies outdated cores and libraries are printed after updating indexes
-    result = run_command("update --outdated")
+    result = run_command("update --show-outdated")
     assert result.ok
     lines = [l.strip() for l in result.stdout.splitlines()]