diff --git a/.gitignore b/.gitignore
index 0c47697..5cd77ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /cbindgen-0.4.3.crate
 /cbindgen-0.6.1.crate
 /cbindgen-0.6.3.crate
+/cbindgen-0.6.4.crate
diff --git a/cbindgen-fix-metadata.diff b/cbindgen-fix-metadata.diff
deleted file mode 100644
index 1fbc69b..0000000
--- a/cbindgen-fix-metadata.diff
+++ /dev/null
@@ -1,11 +0,0 @@
---- cbindgen-0.6.3/Cargo.toml	1970-01-01T01:00:00+01:00
-+++ cbindgen-0.6.3/Cargo.toml	2018-09-15T16:34:36.842009+02:00
-@@ -40,7 +40,7 @@
- features = ["derive"]
- 
- [dependencies.serde_derive]
--version = "=1.0.21"
-+version = "=1.0.58"
- 
- [dependencies.serde_json]
- version = "1.0"
diff --git a/rust-cbindgen.spec b/rust-cbindgen.spec
index fb2b1ad..e6238c8 100644
--- a/rust-cbindgen.spec
+++ b/rust-cbindgen.spec
@@ -4,17 +4,14 @@
 %global crate cbindgen
 
 Name:           rust-%{crate}
-Version:        0.6.3
-Release:        2%{?dist}
+Version:        0.6.4
+Release:        1%{?dist}
 Summary:        Tool for generating C bindings to Rust code
 
 # Upstream license specification: MPL-2.0
 License:        MPLv2.0
 URL:            https://crates.io/crates/cbindgen
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
-# Initial patched metadata
-# * Bump pinned serde, https://github.com/eqrion/cbindgen/pull/207
-Patch0:         cbindgen-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
@@ -74,6 +71,9 @@ which use %{crate} from crates.io.
 %{cargo_registry}/%{crate}-%{version}/
 
 %changelog
+* Thu Oct 04 2018 Josh Stone <jistone@redhat.com> - 0.6.4-1
+- Update to 0.6.4
+
 * Sat Sep 15 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.3-2
 - Add cbindgen back
 
diff --git a/sources b/sources
index 886a860..67f4ddf 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (cbindgen-0.6.3.crate) = 2f212287cf8c47bc1cc8e7ce29a03ce4b1268958bd682b6e7e43e1ad97e31af8925277f8b43493f62cef49c43e3fcfe23a033bec8b791c77ee09a02c17118944
+SHA512 (cbindgen-0.6.4.crate) = 652fbf20b0a33d8b5414f2aaca815f813795c7d1da16636c1437603f51b08fac9e289b0367d79274c8318966ba069fb68cdd15b4b7345b1034f9ab440c6b3a8e