diff --git a/.gitignore b/.gitignore
index 0e636b3..5171a32 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /derive_builder_core-0.4.1.crate
+/derive_builder_core-0.5.0.crate
diff --git a/derive_builder_core-fix-metadata.diff b/derive_builder_core-fix-metadata.diff
index 4ddd983..6f48188 100644
--- a/derive_builder_core-fix-metadata.diff
+++ b/derive_builder_core-fix-metadata.diff
@@ -1,14 +1,5 @@
---- derive_builder_core-0.4.1/Cargo.toml	1970-01-01T00:00:00+00:00
-+++ derive_builder_core-0.4.1/Cargo.toml	2019-03-25T18:38:30.051357+00:00
-@@ -20,7 +20,7 @@
- license = "MIT/Apache-2.0"
- repository = "https://github.com/colin-kiegel/rust-derive-builder"
- [dependencies.darling]
--version = "0.8.5"
-+version = "0.9"
- 
- [dependencies.log]
- version = "0.4"
+--- derive_builder_core-0.5.0/Cargo.toml	1970-01-01T00:00:00+00:00
++++ derive_builder_core-0.5.0/Cargo.toml	2019-06-08T13:29:11.573499+00:00
 @@ -36,7 +36,7 @@
  version = "0.15"
  features = ["full", "extra-traits"]
diff --git a/rust-derive_builder_core.spec b/rust-derive_builder_core.spec
index 4db57d0..5fa45ef 100644
--- a/rust-derive_builder_core.spec
+++ b/rust-derive_builder_core.spec
@@ -1,12 +1,12 @@
-# Generated by rust2rpm
+# Generated by rust2rpm 9
 %bcond_with check
 %global debug_package %{nil}
 
 %global crate derive_builder_core
 
 Name:           rust-%{crate}
-Version:        0.4.1
-Release:        2%{?dist}
+Version:        0.5.0
+Release:        1%{?dist}
 Summary:        Internal helper library for the derive_builder crate
 
 # Upstream license specification: MIT/Apache-2.0
@@ -15,7 +15,6 @@ URL:            https://crates.io/crates/derive_builder_core
 Source:         %{crates_source}
 # Initial patched metadata
 # * Update pretty_assertions to 0.6, https://github.com/colin-kiegel/rust-derive-builder/pull/143
-# * Update darling to 0.9, https://github.com/colin-kiegel/rust-derive-builder/pull/144
 Patch0:         derive_builder_core-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
@@ -31,8 +30,8 @@ BuildRequires:  (crate(syn/full) >= 0.15.0 with crate(syn/full) < 0.16.0)
 BuildRequires:  (crate(pretty_assertions/default) >= 0.6.0 with crate(pretty_assertions/default) < 0.7.0)
 %endif
 
-%global _description \
-Internal helper library for the derive_builder crate.
+%global _description %{expand:
+Internal helper library for the derive_builder crate.}
 
 %description %{_description}
 
@@ -102,6 +101,9 @@ which use "logging" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sat Jun 08 15:29:11 CEST 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.5.0-1
+- Update to 0.5.0
+
 * Mon Mar 25 19:38:30 CET 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.4.1-1
 - Update darling to 0.9
 
diff --git a/sources b/sources
index fc28822..0d0e559 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (derive_builder_core-0.4.1.crate) = abb287b29f4c47741c7f8cccc7d96d23312f2880011a428613562de387326c76b15aef7e9449de3fa5c8f471330fe42639b9f06f7b9ceb16256fd97df764db80
+SHA512 (derive_builder_core-0.5.0.crate) = 1932fddca9d843fc29bff182a1f051fb7342a340d96ebd606940a7468b9498640b31024b9e2598d84bf2f1efa11ac4b40c5f79eba9bcb2b2f972b95f5b9dfcb6