diff --git a/src/meta_plugin/env.rs b/src/meta_plugin/env.rs
index 084e41a..6d87ce7 100644
--- a/src/meta_plugin/env.rs
+++ b/src/meta_plugin/env.rs
@@ -1,6 +1,4 @@
 use crate::meta_plugin::{MetaPlugin, MetaPluginType, process_metadata_outputs};
-use log::debug;
-use std::collections::HashMap;
 
 #[derive(Debug, Clone)]
 pub struct EnvMetaPlugin {
@@ -130,7 +128,10 @@ impl MetaPlugin for EnvMetaPlugin {
     }
     
     fn options(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        &std::collections::HashMap::new()
+        use once_cell::sync::Lazy;
+        static EMPTY: Lazy<std::collections::HashMap<String, serde_yaml::Value>> = 
+            Lazy::new(|| std::collections::HashMap::new());
+        &EMPTY
     }
     
     fn options_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {