diff --git a/src/async_impl/request.rs b/src/async_impl/request.rs
index 138288a..dc3cbd6 100644
--- a/src/async_impl/request.rs
+++ b/src/async_impl/request.rs
@@ -133,31 +133,6 @@ impl RequestBuilder {
         self
     }
 
-    /// Set a header with a type implementing hyper v0.11's `Header` trait.
-    ///
-    /// This method is provided to ease migration, and requires the `hyper-011`
-    /// Cargo feature enabled on `reqwest`.
-    #[cfg(feature = "hyper-011")]
-    pub fn header_011<H>(self, header: H) -> RequestBuilder
-    where
-        H: crate::hyper_011::header::Header,
-    {
-        let mut headers = crate::hyper_011::Headers::new();
-        headers.set(header);
-        let map = crate::header::HeaderMap::from(headers);
-        self.headers(map)
-    }
-
-    /// Set multiple headers using hyper v0.11's `Headers` map.
-    ///
-    /// This method is provided to ease migration, and requires the `hyper-011`
-    /// Cargo feature enabled on `reqwest`.
-    #[cfg(feature = "hyper-011")]
-    pub fn headers_011(self, headers: crate::hyper_011::Headers) -> RequestBuilder {
-        let map = crate::header::HeaderMap::from(headers);
-        self.headers(map)
-    }
-
     /// Enable HTTP basic authentication.
     pub fn basic_auth<U, P>(self, username: U, password: Option<P>) -> RequestBuilder
     where