diff --git a/.gitignore b/.gitignore
index 5e84233..17afff7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,3 +29,4 @@
 /syn-0.15.15.crate
 /syn-0.15.18.crate
 /syn-0.15.20.crate
+/syn-0.15.21.crate
diff --git a/rust-syn.spec b/rust-syn.spec
index 19b9297..7e486d8 100644
--- a/rust-syn.spec
+++ b/rust-syn.spec
@@ -6,7 +6,7 @@
 %global crate syn
 
 Name:           rust-%{crate}
-Version:        0.15.20
+Version:        0.15.21
 Release:        1%{?dist}
 Summary:        Parser for Rust source code
 
@@ -208,6 +208,9 @@ which use "visit-mut" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Fri Nov 16 2018 Josh Stone <jistone@redhat.com> - 0.15.21-1
+- Update to 0.15.21
+
 * Tue Nov 13 2018 Josh Stone <jistone@redhat.com> - 0.15.20-1
 - Update to 0.15.20
 
diff --git a/sources b/sources
index befc119..fa38f82 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (syn-0.15.20.crate) = 82978ed1f42983f8e116070ef35488bbdb65b8a191f4e41db4af6cb9fb8459ab1d65b256126effce745173bd2a83f226c4453ede26239811d35de8beb08766fa
+SHA512 (syn-0.15.21.crate) = 606ffd4bcd74920e7023b2fc83a83087f4a559a9dec0a4a0d5fb6667b9887f98c413191a84b81ddba68e869dfc9fa7d31a3018f90eaed0ad96a039fc46074391