diff --git a/embedded-io/src/lib.rs b/embedded-io/src/lib.rs
index 1412f7e6..5f4e48e3 100644
--- a/embedded-io/src/lib.rs
+++ b/embedded-io/src/lib.rs
@@ -176,7 +176,7 @@ impl From<std::io::ErrorKind> for ErrorKind {
 ///
 /// This trait allows generic code to do limited inspecting of errors,
 /// to react differently to different kinds.
-pub trait Error: fmt::Debug {
+pub trait Error: fmt::Debug + core::error::Error {
     /// Get the kind of this error.
     fn kind(&self) -> ErrorKind;
 }