diff --git a/.gitignore b/.gitignore
index 6989591..a0fe99e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /mio-0.6.16.crate
 /mio-0.6.19.crate
 /mio-0.6.20.crate
+/mio-0.6.21.crate
diff --git a/mio-fix-metadata.diff b/mio-fix-metadata.diff
index e105d54..9303284 100644
--- a/mio-fix-metadata.diff
+++ b/mio-fix-metadata.diff
@@ -1,14 +1,5 @@
 --- mio-0.6.20/Cargo.toml	1970-01-01T00:00:00+00:00
 +++ mio-0.6.20/Cargo.toml	2019-11-22T19:34:26.604578+00:00
-@@ -28,7 +28,7 @@
- name = "test"
- path = "test/mod.rs"
- [dependencies.cfg-if]
--version = "=0.1.9"
-+version = "0.1.9"
- 
- [dependencies.iovec]
- version = "0.1.1"
 @@ -54,18 +54,5 @@
  [features]
  default = ["with-deprecated"]
diff --git a/rust-mio.spec b/rust-mio.spec
index 371f795..c4edf80 100644
--- a/rust-mio.spec
+++ b/rust-mio.spec
@@ -1,11 +1,11 @@
-# Generated by rust2rpm 10
+# Generated by rust2rpm 11
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate mio
 
 Name:           rust-%{crate}
-Version:        0.6.20
+Version:        0.6.21
 Release:        1%{?dist}
 Summary:        Lightweight non-blocking IO
 
@@ -15,7 +15,6 @@ URL:            https://crates.io/crates/mio
 Source:         %{crates_source}
 # Initial patched metadata
 # * No windows or fuchsia
-# * Loosen cfg-if dependency: https://github.com/tokio-rs/mio/pull/1099#issuecomment-557664365
 Patch0:         mio-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
@@ -88,6 +87,9 @@ which use "with-deprecated" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Tue Dec 10 2019 Josh Stone <jistone@redhat.com> - 0.6.21-1
+- Update to 0.6.21
+
 * Fri Nov 22 2019 Josh Stone <jistone@redhat.com> - 0.6.20-1
 - Update to 0.6.20
 
diff --git a/sources b/sources
index aca13e4..f2d24b3 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (mio-0.6.20.crate) = a1ef5732b61b1cac4514b71740cf51c6d256719d4443388f7914826eb7715f674fbf45c39c4f790b765118e7dfe72a5de6b3568d581832a05bc586bbbbdf0a09
+SHA512 (mio-0.6.21.crate) = 2bc68f6ff424d3ae2ef67a6a1a708b4c42b05f616cad1b0061dce3157c6a46d0666173e65c6f8b7960051e21b526ab5acbdc835833b5496fda280719ad139c77