diff --git a/src/error.rs b/src/error.rs
index 4563e1e..050610d 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -34,7 +34,7 @@ impl fmt::Display for Error {
 }
 
 impl error::Error for Error {
-    fn source<'a>(&'a self) -> Option<&(dyn error::Error + 'static)> {
+    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
         self.reason.as_deref()
     }
 }