diff --git a/.gitignore b/.gitignore
index 2dc689d..360a3c0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /aho-corasick-0.6.3.crate
+/aho-corasick-0.6.4.crate
diff --git a/aho-corasick-0.6.3-fix-metadata.diff b/aho-corasick-0.6.3-fix-metadata.diff
deleted file mode 100644
index 719bdbf..0000000
--- a/aho-corasick-0.6.3-fix-metadata.diff
+++ /dev/null
@@ -1,18 +0,0 @@
---- aho-corasick-0.6.3/Cargo.toml	2017-03-17T01:43:22+01:00
-+++ aho-corasick-0.6.3/Cargo.toml	2017-11-29T11:11:23.430726+01:00
-@@ -21,13 +21,13 @@
- bench = false
- 
- [dependencies]
--memchr = "1"
-+memchr = "2"
- 
- [dev-dependencies]
- csv = "0.15"
- docopt = "0.7"
- memmap = "0.5"
--quickcheck = { version = "0.4", default-features = false }
-+quickcheck = { version = "0.5", default-features = false }
- rand = "0.3"
- rustc-serialize = "0.3"
- 
diff --git a/rust-aho-corasick.spec b/rust-aho-corasick.spec
index ffbebee..dc9cced 100644
--- a/rust-aho-corasick.spec
+++ b/rust-aho-corasick.spec
@@ -6,17 +6,13 @@
 %global crate aho-corasick
 
 Name:           rust-%{crate}
-Version:        0.6.3
-Release:        5%{?dist}
+Version:        0.6.4
+Release:        1%{?dist}
 Summary:        Fast multiple substring searching with finite state machines
 
 License:        Unlicense or MIT
 URL:            https://crates.io/crates/aho-corasick
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
-# Initial patched metadata
-# * Bump memchr to 2, https://github.com/BurntSushi/aho-corasick/commit/c880e210269d5f35bb64cf0e78071e6ea990d14e
-# * Bump quickcheck to 0.5, https://github.com/BurntSushi/aho-corasick/pull/20
-Patch0:         aho-corasick-0.6.3-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
@@ -69,6 +65,9 @@ which use %{crate} from crates.io.
 %exclude %{_bindir}/aho-corasick-dot
 
 %changelog
+* Thu Nov 30 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.4-1
+- Update to 0.6.4
+
 * Wed Nov 29 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.3-5
 - Bump quickcheck to 0.5
 
diff --git a/sources b/sources
index ff6e544..14974e1 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (aho-corasick-0.6.3.crate) = 4d0d55d8a6657fe13009d66728b7417926325dd9ca4f7ad7cd5d40e59cf0a55b906cd109d724a0b385ee988526535fc64a467ded171419e452c5a8c90196ae45
+SHA512 (aho-corasick-0.6.4.crate) = 0191f627896469bdb271f1b9d2f3d3b0f7952579cd07c2659996ad66a961dbe605c6a4a929100d6b9c246e65199c0e180b1e8349943f06a6f08250e003e62b65