diff --git a/.gitignore b/.gitignore
index d0dc743..16b9178 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@
 /rand_core-0.6.1.crate
 /rand_core-0.6.2.crate
 /rand_core-0.6.3.crate
+/rand_core-0.6.4.crate
diff --git a/rust-rand_core.spec b/rust-rand_core.spec
index a938f71..07412e5 100644
--- a/rust-rand_core.spec
+++ b/rust-rand_core.spec
@@ -1,25 +1,21 @@
-# Generated by rust2rpm 19
+# Generated by rust2rpm 22
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate rand_core
 
-Name:           rust-%{crate}
-Version:        0.6.3
+Name:           rust-rand_core
+Version:        0.6.4
 Release:        %autorelease
 Summary:        Core random number generator traits and tools for implementation
 
-# Upstream license specification: MIT OR Apache-2.0
-License:        MIT or ASL 2.0
+License:        MIT OR Apache-2.0
 URL:            https://crates.io/crates/rand_core
 Source:         %{crates_source}
 
 ExclusiveArch:  %{rust_arches}
-%if %{__cargo_skip_build}
-BuildArch:      noarch
-%endif
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Core random number generator traits and tools for implementation.}
@@ -33,12 +29,15 @@ BuildArch:      noarch
 %description    devel %{_description}
 
 This package contains library source intended for building other packages which
-use "%{crate}" crate.
+use the "%{crate}" crate.
 
 %files          devel
-%license COPYRIGHT LICENSE-APACHE LICENSE-MIT
-%doc CHANGELOG.md README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/COPYRIGHT
+%license %{crate_instdir}/LICENSE-APACHE
+%license %{crate_instdir}/LICENSE-MIT
+%doc %{crate_instdir}/CHANGELOG.md
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -47,10 +46,10 @@ BuildArch:      noarch
 %description -n %{name}+default-devel %{_description}
 
 This package contains library source intended for building other packages which
-use "the default" feature of the "%{crate}" crate.
+use the "default" feature of the "%{crate}" crate.
 
 %files       -n %{name}+default-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+alloc-devel
 Summary:        %{summary}
@@ -59,10 +58,10 @@ BuildArch:      noarch
 %description -n %{name}+alloc-devel %{_description}
 
 This package contains library source intended for building other packages which
-use "the alloc" feature of the "%{crate}" crate.
+use the "alloc" feature of the "%{crate}" crate.
 
 %files       -n %{name}+alloc-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+getrandom-devel
 Summary:        %{summary}
@@ -71,10 +70,10 @@ BuildArch:      noarch
 %description -n %{name}+getrandom-devel %{_description}
 
 This package contains library source intended for building other packages which
-use "the getrandom" feature of the "%{crate}" crate.
+use the "getrandom" feature of the "%{crate}" crate.
 
 %files       -n %{name}+getrandom-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+serde-devel
 Summary:        %{summary}
@@ -83,10 +82,10 @@ BuildArch:      noarch
 %description -n %{name}+serde-devel %{_description}
 
 This package contains library source intended for building other packages which
-use "the serde" feature of the "%{crate}" crate.
+use the "serde" feature of the "%{crate}" crate.
 
 %files       -n %{name}+serde-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+serde1-devel
 Summary:        %{summary}
@@ -95,10 +94,10 @@ BuildArch:      noarch
 %description -n %{name}+serde1-devel %{_description}
 
 This package contains library source intended for building other packages which
-use "the serde1" feature of the "%{crate}" crate.
+use the "serde1" feature of the "%{crate}" crate.
 
 %files       -n %{name}+serde1-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+std-devel
 Summary:        %{summary}
@@ -107,10 +106,10 @@ BuildArch:      noarch
 %description -n %{name}+std-devel %{_description}
 
 This package contains library source intended for building other packages which
-use "the std" feature of the "%{crate}" crate.
+use the "std" feature of the "%{crate}" crate.
 
 %files       -n %{name}+std-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
diff --git a/sources b/sources
index e542436..e8865ab 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (rand_core-0.6.3.crate) = 0fc31f96ca8ebba8c179367de01458e909265e1d627ec0c5620be7c8e83d2f9570471d6ec2cb2bc4bc531505b02fc31f1165708cc1357906791c87123b06ee87
+SHA512 (rand_core-0.6.4.crate) = 36c67eb845aa2ccca49d6d680f28d418229bbc5a050729e487fe6b9f9f384fdd7b8d67fc6508b90b79ffb3c26688e72feceb3ecae57d3d7f59338aeb62296f79