diff --git a/src/lib.rs b/src/lib.rs
index f72ff50..59d3726 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -46,11 +46,11 @@ impl Corrections {
         Corrections { }
     }
 
-    pub fn correct_str(&self, word: &str) -> Option<&str> {
+    pub fn correct_str<'s>(&'s self, word: &str) -> Option<&'s str> {
         DICTIONARY.get(word).map(|s| *s)
     }
 
-    pub fn correct_bytes(&self, word: &[u8]) -> Option<&[u8]> {
+    pub fn correct_bytes<'s>(&'s self, word: &[u8]) -> Option<&'s [u8]> {
         std::str::from_utf8(word).ok().and_then(|word| DICTIONARY.get(word)).map(|s| s.as_bytes())
     }
 }