diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6bfb3b72704..3e8ff6aba4c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,6 +9,7 @@ name: CI
 env:
   RUSTFLAGS: -Dwarnings
   RUST_BACKTRACE: 1
+  RUSTUP_TOOLCHAIN: 1.48.0
   nightly: nightly-2021-04-25
   minrust: 1.45.2
 
diff --git a/README.md b/README.md
index ddad6d3127e..d35e2e6994c 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Make sure you activated the full features of the tokio crate on Cargo.toml:
 
 ```toml
 [dependencies]
-tokio = { version = "1.8.0", features = ["full"] }
+tokio = { version = "1.8.5", features = ["full"] }
 ```
 Then, on your main.rs:
 
diff --git a/tokio/CHANGELOG.md b/tokio/CHANGELOG.md
index 806d440766b..149c7918258 100644
--- a/tokio/CHANGELOG.md
+++ b/tokio/CHANGELOG.md
@@ -1,3 +1,32 @@
+# 1.8.5 (January 27, 2022)
+
+This release backports a bug fix from 1.16.0
+
+Fixes a soundness bug in `io::Take` ([#4428]). The unsoundness is exposed when
+leaking memory in the given `AsyncRead` implementation and then overwriting the
+supplied buffer:
+
+```rust
+impl AsyncRead for Buggy {
+    fn poll_read(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &mut ReadBuf<'_>
+    ) -> Poll<Result<()>> {
+      let new_buf = vec![0; 5].leak();
+      *buf = ReadBuf::new(new_buf);
+      buf.put_slice(b"hello");
+      Poll::Ready(Ok(()))
+    }
+}
+```
+
+### Fixed
+
+- io: **soundness** don't expose uninitialized memory when using `io::Take` in edge case ([#4428])
+
+[#4428]: https://github.com/tokio-rs/tokio/pull/4428
+
 # 1.8.4 (November 15, 2021)
 
 This release backports a bug fix from 1.13.1.
diff --git a/tokio/Cargo.toml b/tokio/Cargo.toml
index 26f1a9ddfb2..c6ccbac225b 100644
--- a/tokio/Cargo.toml
+++ b/tokio/Cargo.toml
@@ -7,12 +7,12 @@ name = "tokio"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v1.0.x" git tag.
-version = "1.8.4"
+version = "1.8.5"
 edition = "2018"
 authors = ["Tokio Contributors <team@tokio.rs>"]
 license = "MIT"
 readme = "README.md"
-documentation = "https://docs.rs/tokio/1.8.4/tokio/"
+documentation = "https://docs.rs/tokio/1.8.5/tokio/"
 repository = "https://github.com/tokio-rs/tokio"
 homepage = "https://tokio.rs"
 description = """
diff --git a/tokio/LICENSE b/tokio/LICENSE
index ffa38bb61cc..8af5baf01ea 100644
--- a/tokio/LICENSE
+++ b/tokio/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2021 Tokio Contributors
+Copyright (c) 2022 Tokio Contributors
 
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated