diff --git a/src/error.rs b/src/error.rs
index 2fcf2f7a..73096595 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -47,7 +47,7 @@ pub enum ErrorKind {
 }
 
 impl Fail for Error {
-    fn cause(&self) -> Option<&Fail> {
+    fn cause(&self) -> Option<&dyn Fail> {
         self.inner.cause()
     }