diff --git a/.gitignore b/.gitignore
index dd18091..7b7babb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@
 /syn-0.14.8.crate
 /syn-0.15.1.crate
 /syn-0.15.3.crate
+/syn-0.15.4.crate
diff --git a/rust-syn.spec b/rust-syn.spec
index 070db52..18a4392 100644
--- a/rust-syn.spec
+++ b/rust-syn.spec
@@ -6,7 +6,7 @@
 %global crate syn
 
 Name:           rust-%{crate}
-Version:        0.15.3
+Version:        0.15.4
 Release:        1%{?dist}
 Summary:        Parser for Rust source code
 
@@ -63,6 +63,9 @@ which use %{crate} from crates.io.
 %{cargo_registry}/%{crate}-%{version}/
 
 %changelog
+* Wed Sep 12 2018 Josh Stone <jistone@redhat.com> - 0.15.4-1
+- Update to 0.15.4
+
 * Tue Sep 11 2018 Josh Stone <jistone@redhat.com> - 0.15.3-1
 - Update to 0.15.3
 
diff --git a/sources b/sources
index 2c901ec..8ff5628 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (syn-0.15.3.crate) = 4249c3961af55a039234726732779f3391c8f7475314d4735c4bba149f5a2505b12675ba35200abfe9c870c48e4e044636de520cf2e3d31050cfce4515ab026f
+SHA512 (syn-0.15.4.crate) = 09a691675f69d4b75222c463cf2cab25851f8052e95eb655f22d6991fe7dfc171af50bb94d346688244400ace7c83e78e44914d409de16673d34e1060d39f27d