diff --git a/.gitignore b/.gitignore
index e05e892..7705306 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 /proc-macro2-0.4.18.crate
 /proc-macro2-0.4.19.crate
 /proc-macro2-0.4.20.crate
+/proc-macro2-0.4.21.crate
diff --git a/rust-proc-macro2.spec b/rust-proc-macro2.spec
index 048abbc..0df0e03 100644
--- a/rust-proc-macro2.spec
+++ b/rust-proc-macro2.spec
@@ -6,8 +6,8 @@
 %global crate proc-macro2
 
 Name:           rust-%{crate}
-Version:        0.4.20
-Release:        2%{?dist}
+Version:        0.4.21
+Release:        1%{?dist}
 Summary:        Stable implementation of the upcoming new `proc_macro` API
 
 # Upstream license specification: MIT/Apache-2.0
@@ -81,6 +81,9 @@ which use "proc-macro" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sat Nov 10 2018 Josh Stone <jistone@redhat.com> - 0.4.21-1
+- Update to 0.4.21
+
 * Fri Oct 26 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.4.20-2
 - Adapt to new packaging
 
diff --git a/sources b/sources
index 9c9bad3..55a1b6c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (proc-macro2-0.4.20.crate) = 40c3bc5c147325523f02832db015925b7fdbbc7c430be39c8829bf8f7e9bae33fbb3313328daa1dc7d791545df5af76d27f1ec9f44943db91bee8c729a02df79
+SHA512 (proc-macro2-0.4.21.crate) = 9e0603d634d0748047dbc0e4c44dce54cba1026ed76945b09ed72224c015465cc8541d4045185f8b8cf6ff316daec50bc5a3ad7ddf5015aa971135497e5261ed