1 files changed, 3 insertions, 1 deletions
diff --git a/src/poem/anthology/export.rs b/src/poem/anthology/export.rs
index dfbaf81..aa5a894 100644
--- a/src/poem/anthology/export.rs
+++ b/src/poem/anthology/export.rs
@@ -1,4 +1,5 @@
 use crate::poem::Verse;
+use std::collections::BTreeMap;
 use std::env;
 
 /// export
@@ -26,7 +27,8 @@ pub fn incant(verse: &Verse) -> i32 {
             }
         }
         None => {
-            for (key, val) in env::vars() {
+            let sorted: BTreeMap<_, _> = env::vars().into_iter().collect();
+            for (key, val) in sorted {
                 println!("{}={}", key, val);
             }
         }