diff --git a/.gitignore b/.gitignore
index a06f73b..38195c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /uuid-0.5.1.crate
 /uuid-0.6.3.crate
+/uuid-0.6.4.crate
diff --git a/rust-uuid.spec b/rust-uuid.spec
index c999882..04ccb32 100644
--- a/rust-uuid.spec
+++ b/rust-uuid.spec
@@ -5,7 +5,7 @@
 %global crate uuid
 
 Name:           rust-%{crate}
-Version:        0.6.3
+Version:        0.6.4
 Release:        1%{?dist}
 Summary:        Library to generate and parse UUIDs
 
@@ -14,20 +14,21 @@ URL:            https://crates.io/crates/uuid
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
 # Initial patched metadata
 # * Drop slog dependency until packaged
-Patch0:         uuid-0.6.3-fix-metadata.diff
+Patch0:         uuid-0.6.4-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
 # [dependencies]
-BuildRequires:  (crate(cfg-if) >= 0.1.0 with crate(cfg-if) < 0.2.0)
+BuildRequires:  ((crate(byteorder) >= 1.0.0 with crate(byteorder) < 2.0.0) with crate(byteorder/i128))
+BuildRequires:  (crate(cfg-if) >= 0.1.2 with crate(cfg-if) < 0.2.0)
 BuildRequires:  (crate(md5) >= 0.3.0 with crate(md5) < 0.4.0)
 BuildRequires:  (crate(rand) >= 0.4.0 with crate(rand) < 0.5.0)
-BuildRequires:  (crate(serde) >= 1.0.16 with crate(serde) < 2.0.0)
+BuildRequires:  (crate(serde) >= 1.0.56 with crate(serde) < 2.0.0)
 BuildRequires:  (crate(sha1) >= 0.6.0 with crate(sha1) < 0.7.0)
 %if %{with check}
 # [dev-dependencies]
-BuildRequires:  (crate(serde_test) >= 1.0.19 with crate(serde_test) < 2.0.0)
+BuildRequires:  (crate(serde_test) >= 1.0.56 with crate(serde_test) < 2.0.0)
 %endif
 
 %description
@@ -65,6 +66,9 @@ which use %{crate} from crates.io.
 %exclude %{cargo_registry}/%{crate}-%{version}/bors.toml
 
 %changelog
+* Thu May 24 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.4-1
+- Update to 0.6.4
+
 * Thu Apr 26 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.3-1
 - Update to 0.6.3
 
diff --git a/sources b/sources
index 21eabfa..f200a86 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (uuid-0.6.3.crate) = de6fe3a2fe5d5ecf1b2cb6858358b813d93f7c92ef76b1395710dc4a635987e51e5a474d9844e1a28920ac0703177460f78aaacd46dd5ddad92f2e8fa84beca2
+SHA512 (uuid-0.6.4.crate) = 6d7b4cb07268a9b1eedc821eafea1bcf5af6c14f8c95563f803f916113794533a4066bd64a8f152a04db5a6595e92b88bd6f56b9b6c78d488b7fd2b5c8905b7f
diff --git a/uuid-0.6.3-fix-metadata.diff b/uuid-0.6.3-fix-metadata.diff
deleted file mode 100644
index 7ea55c3..0000000
--- a/uuid-0.6.3-fix-metadata.diff
+++ /dev/null
@@ -1,12 +0,0 @@
---- uuid-0.6.3/Cargo.toml	1970-01-01T01:00:00+01:00
-+++ uuid-0.6.3/Cargo.toml	2018-04-26T09:14:24.299700+02:00
-@@ -42,9 +42,6 @@
- version = "0.6"
- optional = true
- 
--[dependencies.slog]
--version = "2"
--optional = true
- [dev-dependencies.serde_test]
- version = "1.0.19"
- 
diff --git a/uuid-0.6.4-fix-metadata.diff b/uuid-0.6.4-fix-metadata.diff
new file mode 100644
index 0000000..035075e
--- /dev/null
+++ b/uuid-0.6.4-fix-metadata.diff
@@ -0,0 +1,12 @@
+--- uuid-0.6.4/Cargo.toml	1970-01-01T01:00:00+01:00
++++ uuid-0.6.4/Cargo.toml	2018-05-24T09:59:00.062822+02:00
+@@ -52,9 +52,6 @@
+ version = "0.6"
+ optional = true
+ 
+-[dependencies.slog]
+-version = "2"
+-optional = true
+ [dev-dependencies.serde_test]
+ version = "1.0.56"
+