diff --git a/Cargo.toml b/Cargo.toml
index bc4d670cb..9feb647db 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,6 @@ std = []
 
 [dependencies]
 serde = { version = "1.0", optional = true }
-either = { version = "1.5", default-features = false, optional = true }
 
 [dev-dependencies]
 loom = "0.2.10"
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 416e1fb7e..18b59745d 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -30,7 +30,6 @@ jobs:
     cross: true
     features:
       - serde
-      - either
 
 # Nightly
 - template: ci/azure-test-stable.yml
diff --git a/src/either.rs b/src/either.rs
deleted file mode 100644
index 9a0fd396f..000000000
--- a/src/either.rs
+++ /dev/null
@@ -1,93 +0,0 @@
-use crate::{Buf, BufMut};
-
-use either::Either;
-use either::Either::*;
-
-#[cfg(feature = "std")]
-use std::io::IoSlice;
-#[cfg(feature = "std")]
-use crate::buf::IoSliceMut;
-
-impl<L, R> Buf for Either<L, R>
-where
-    L: Buf,
-    R: Buf,
-{
-    fn remaining(&self) -> usize {
-        match *self {
-            Left(ref b) => b.remaining(),
-            Right(ref b) => b.remaining(),
-        }
-    }
-
-    fn bytes(&self) -> &[u8] {
-        match *self {
-            Left(ref b) => b.bytes(),
-            Right(ref b) => b.bytes(),
-        }
-    }
-
-    #[cfg(feature = "std")]
-    fn bytes_vectored<'a>(&'a self, dst: &mut [IoSlice<'a>]) -> usize {
-        match *self {
-            Left(ref b) => b.bytes_vectored(dst),
-            Right(ref b) => b.bytes_vectored(dst),
-        }
-    }
-
-    fn advance(&mut self, cnt: usize) {
-        match *self {
-            Left(ref mut b) => b.advance(cnt),
-            Right(ref mut b) => b.advance(cnt),
-        }
-    }
-
-    fn copy_to_slice(&mut self, dst: &mut [u8]) {
-        match *self {
-            Left(ref mut b) => b.copy_to_slice(dst),
-            Right(ref mut b) => b.copy_to_slice(dst),
-        }
-    }
-}
-
-impl<L, R> BufMut for Either<L, R>
-where
-    L: BufMut,
-    R: BufMut,
-{
-    fn remaining_mut(&self) -> usize {
-        match *self {
-            Left(ref b) => b.remaining_mut(),
-            Right(ref b) => b.remaining_mut(),
-        }
-    }
-
-    fn bytes_mut(&mut self) -> &mut [core::mem::MaybeUninit<u8>] {
-        match *self {
-            Left(ref mut b) => b.bytes_mut(),
-            Right(ref mut b) => b.bytes_mut(),
-        }
-    }
-
-    #[cfg(feature = "std")]
-    fn bytes_vectored_mut<'a>(&'a mut self, dst: &mut [IoSliceMut<'a>]) -> usize {
-        match *self {
-            Left(ref mut b) => b.bytes_vectored_mut(dst),
-            Right(ref mut b) => b.bytes_vectored_mut(dst),
-        }
-    }
-
-    unsafe fn advance_mut(&mut self, cnt: usize) {
-        match *self {
-            Left(ref mut b) => b.advance_mut(cnt),
-            Right(ref mut b) => b.advance_mut(cnt),
-        }
-    }
-
-    fn put_slice(&mut self, src: &[u8]) {
-        match *self {
-            Left(ref mut b) => b.put_slice(src),
-            Right(ref mut b) => b.put_slice(src),
-        }
-    }
-}
diff --git a/src/lib.rs b/src/lib.rs
index 69def08b5..c565aa7a0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -96,11 +96,6 @@ pub use crate::bytes::Bytes;
 #[cfg(feature = "serde")]
 mod serde;
 
-// Optional `Either` support
-#[cfg(feature = "either")]
-mod either;
-
-
 #[inline(never)]
 #[cold]
 fn abort() -> ! {