diff --git a/cmd/root.go b/cmd/root.go
index 3f7eb12..de32991 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -45,6 +45,9 @@ func initRootCmd() {
 	rootCmd.PersistentFlags().BoolVar(&appConfig.OutputOrderReverse, "reverse", false, "Reverses output item order")
 	rootCmd.PersistentFlags().BoolVar(&appConfig.PrintConfig, "print-config", false, "Enable printing the application config")
 
+	// Add flag completions
+	rootCmd.RegisterFlagCompletionFunc("output", cobra.FixedCompletions(formatters, cobra.ShellCompDirectiveNoFileComp))
+
 	// Create logger and add child commands
 	logger := jlog.New(slog.LevelDebug)
 	ctx := jlog.ContextWith(context.Background(), logger)