diff --git a/src/imp/openssl.rs b/src/imp/openssl.rs
index cc83f2e6..9dfc4b74 100644
--- a/src/imp/openssl.rs
+++ b/src/imp/openssl.rs
@@ -127,10 +127,10 @@ impl error::Error for Error {
         }
     }
 
-    fn cause(&self) -> Option<&error::Error> {
+    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
         match *self {
-            Error::Normal(ref e) => error::Error::cause(e),
-            Error::Ssl(ref e, _) => error::Error::cause(e),
+            Error::Normal(ref e) => Some(e),
+            Error::Ssl(ref e, _) => Some(e),
         }
     }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 34f3fa0a..e1902466 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -136,9 +136,13 @@ impl error::Error for Error {
         error::Error::description(&self.0)
     }
 
-    fn cause(&self) -> Option<&error::Error> {
+    fn cause(&self) -> Option<&dyn error::Error> {
         error::Error::cause(&self.0)
     }
+
+    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
+        error::Error::source(&self.0)
+    }
 }
 
 impl fmt::Display for Error {