diff --git a/actix-web/CHANGES.md b/actix-web/CHANGES.md
index 993c7c596..e0390563c 100644
--- a/actix-web/CHANGES.md
+++ b/actix-web/CHANGES.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Added
+
+- Implement `From<Box<dyn ResponseError>>` for `Error`.
+
 ## 4.6.0
 
 ### Added
diff --git a/actix-web/src/error/error.rs b/actix-web/src/error/error.rs
index 3a5a128f6..670a58a00 100644
--- a/actix-web/src/error/error.rs
+++ b/actix-web/src/error/error.rs
@@ -60,6 +60,12 @@ impl<T: ResponseError + 'static> From<T> for Error {
     }
 }
 
+impl From<Box<dyn ResponseError>> for Error {
+    fn from(value: Box<dyn ResponseError>) -> Self {
+        Error { cause: value }
+    }
+}
+
 impl From<Error> for Response<BoxBody> {
     fn from(err: Error) -> Response<BoxBody> {
         err.error_response().into()