diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
index 4fd4ba3..f3ad3ab 100644
--- a/.cargo_vcs_info.json
+++ b/.cargo_vcs_info.json
@@ -1,5 +1,5 @@
 {
   "git": {
-    "sha1": "1d53a29ec16ccd5b094fb205edb73591455eb4b6"
+    "sha1": "c91f8691672c7401b1923ab00bf138975c99391a"
   }
 }
diff --git a/Android.bp b/Android.bp
index 89ef411..c4f884a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,4 +1,5 @@
 // This file is generated by cargo2android.py --run --dependencies --device --tests --patch=patches/Android.bp.patch.
+// Do not modify this file as changes will be overridden on upgrade.
 
 package {
     default_applicable_licenses: ["external_rust_crates_futures-io_license"],
diff --git a/Cargo.toml b/Cargo.toml
index 6d0ce17..0cf53b7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@
 [package]
 edition = "2018"
 name = "futures-io"
-version = "0.3.12"
+version = "0.3.13"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 description = "The `AsyncRead`, `AsyncWrite`, `AsyncSeek`, and `AsyncBufRead` traits for the futures-rs library.\n"
 homepage = "https://rust-lang.github.io/futures-rs"
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index e90e9cb..2edbdc3 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,7 +1,7 @@
 [package]
 name = "futures-io"
 edition = "2018"
-version = "0.3.12"
+version = "0.3.13"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"
diff --git a/METADATA b/METADATA
index d0a9b4e..64097af 100644
--- a/METADATA
+++ b/METADATA
@@ -7,13 +7,13 @@
   }
   url {
     type: ARCHIVE
-    value: "https://static.crates.io/crates/futures-io/futures-io-0.3.12.crate"
+    value: "https://static.crates.io/crates/futures-io/futures-io-0.3.13.crate"
   }
-  version: "0.3.12"
+  version: "0.3.13"
   license_type: NOTICE
   last_upgrade_date {
     year: 2021
-    month: 2
-    day: 9
+    month: 4
+    day: 1
   }
 }
diff --git a/TEST_MAPPING b/TEST_MAPPING
index e884376..568eaf7 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,10 +2,58 @@
 {
   "presubmit": [
     {
+      "name": "anyhow_device_test_tests_test_repr"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_context"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_convert"
+    },
+    {
       "name": "futures-io_device_test_src_lib"
     },
     {
+      "name": "tokio-test_device_test_tests_block_on"
+    },
+    {
+      "name": "tokio-test_device_test_tests_io"
+    },
+    {
+      "name": "tokio-test_device_test_tests_macros"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_downcast"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_fmt"
+    },
+    {
       "name": "futures-util_device_test_src_lib"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_autotrait"
+    },
+    {
+      "name": "anyhow_device_test_src_lib"
+    },
+    {
+      "name": "tokio-test_device_test_src_lib"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_source"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_ffi"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_macros"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_chain"
+    },
+    {
+      "name": "anyhow_device_test_tests_test_boxed"
     }
   ]
 }
diff --git a/src/lib.rs b/src/lib.rs
index 1468ea0..48de896 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -33,19 +33,13 @@
     // Re-export some types from `std::io` so that users don't have to deal
     // with conflicts when `use`ing `futures::io` and `std::io`.
     #[allow(unreachable_pub)] // https://github.com/rust-lang/rust/issues/57411
-    pub use io::{
-        Error as Error,
-        ErrorKind as ErrorKind,
-        Result as Result,
-        IoSlice as IoSlice,
-        IoSliceMut as IoSliceMut,
-        SeekFrom as SeekFrom,
-    };
-
+    #[doc(no_inline)]
+    pub use io::{Error, ErrorKind, Result, IoSlice, IoSliceMut, SeekFrom};
     #[cfg(feature = "read-initializer")]
     #[cfg_attr(docsrs, doc(cfg(feature = "read-initializer")))]
+    #[doc(no_inline)]
     #[allow(unreachable_pub)] // https://github.com/rust-lang/rust/issues/57411
-    pub use io::Initializer as Initializer;
+    pub use io::Initializer;
 
     /// Read bytes asynchronously.
     ///