diff --git a/actix-cors/CHANGES.md b/actix-cors/CHANGES.md
index 89c2ad305..f06f44674 100644
--- a/actix-cors/CHANGES.md
+++ b/actix-cors/CHANGES.md
@@ -1,8 +1,11 @@
 # Changes
 
 ## Unreleased - 2021-xx-xx
+- Relax body type bounds on middleware impl. [#223]
 - Update `actix-web` dependency to `4.0.0-rc.1`.
 
+[#223]: https://github.com/actix/actix-extras/pull/223
+
 
 ## 0.6.0-beta.8 - 2021-12-29
 - Minimum supported Rust version (MSRV) is now 1.54.
diff --git a/actix-cors/src/builder.rs b/actix-cors/src/builder.rs
index 67490c4ff..6d55671c9 100644
--- a/actix-cors/src/builder.rs
+++ b/actix-cors/src/builder.rs
@@ -490,7 +490,6 @@ where
     S::Future: 'static,
 
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = Error;
diff --git a/actix-cors/src/middleware.rs b/actix-cors/src/middleware.rs
index ad186f050..1f01d997e 100644
--- a/actix-cors/src/middleware.rs
+++ b/actix-cors/src/middleware.rs
@@ -143,7 +143,6 @@ where
     S::Future: 'static,
 
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = Error;
@@ -189,12 +188,19 @@ where
 mod tests {
     use actix_web::{
         dev::Transform,
+        middleware::Compat,
         test::{self, TestRequest},
+        App,
     };
 
     use super::*;
     use crate::Cors;
 
+    #[test]
+    fn compat_compat() {
+        let _ = App::new().wrap(Compat::new(Cors::default()));
+    }
+
     #[actix_web::test]
     async fn test_options_no_origin() {
         // Tests case where allowed_origins is All but there are validate functions to run incase.
diff --git a/actix-identity/CHANGES.md b/actix-identity/CHANGES.md
index 897d03bc7..595aee27b 100644
--- a/actix-identity/CHANGES.md
+++ b/actix-identity/CHANGES.md
@@ -1,8 +1,11 @@
 # Changes
 
 ## Unreleased - 2021-xx-xx
+- Relax body type bounds on middleware impl. [#223]
 - Update `actix-web` dependency to `4.0.0-rc.1`.
 
+[#223]: https://github.com/actix/actix-extras/pull/223
+
 
 ## 0.4.0-beta.8 - 2022-01-21
 - No significant changes since `0.4.0-beta.7`.
diff --git a/actix-identity/src/middleware.rs b/actix-identity/src/middleware.rs
index 2c3fe8478..9e5deb2b2 100644
--- a/actix-identity/src/middleware.rs
+++ b/actix-identity/src/middleware.rs
@@ -44,7 +44,6 @@ where
     S::Future: 'static,
     T: IdentityPolicy,
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = Error;
@@ -80,7 +79,6 @@ where
     S::Future: 'static,
     T: IdentityPolicy,
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = Error;
diff --git a/actix-session/src/cookie.rs b/actix-session/src/cookie.rs
index f520d5fca..01778600e 100644
--- a/actix-session/src/cookie.rs
+++ b/actix-session/src/cookie.rs
@@ -301,7 +301,6 @@ where
     S::Future: 'static,
     S::Error: 'static,
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = S::Error;
@@ -329,7 +328,6 @@ where
     S::Future: 'static,
     S::Error: 'static,
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = S::Error;
diff --git a/actix-web-httpauth/CHANGES.md b/actix-web-httpauth/CHANGES.md
index 9078d7481..e927cc115 100644
--- a/actix-web-httpauth/CHANGES.md
+++ b/actix-web-httpauth/CHANGES.md
@@ -1,8 +1,11 @@
 # Changes
 
 ## Unreleased - 2021-xx-xx
+- Relax body type bounds on middleware impl. [#223]
 - Update `actix-web` dependency to `4.0.0-rc.1`.
 
+[#223]: https://github.com/actix/actix-extras/pull/223
+
 
 ## 0.6.0-beta.7 - 2021-12-29
 - Minimum supported Rust version (MSRV) is now 1.54.
diff --git a/actix-web-httpauth/src/middleware.rs b/actix-web-httpauth/src/middleware.rs
index d3a9a4797..fa82f72b9 100644
--- a/actix-web-httpauth/src/middleware.rs
+++ b/actix-web-httpauth/src/middleware.rs
@@ -124,7 +124,6 @@ where
     O: Future<Output = Result<ServiceRequest, Error>> + 'static,
     T: AuthExtractor + 'static,
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = Error;
@@ -159,7 +158,6 @@ where
     O: Future<Output = Result<ServiceRequest, Error>> + 'static,
     T: AuthExtractor + 'static,
     B: MessageBody + 'static,
-    B::Error: Into<Error>,
 {
     type Response = ServiceResponse<EitherBody<B>>;
     type Error = S::Error;