diff --git a/.gitignore b/.gitignore
index e7a63c8..24a2da6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /num_enum-0.5.3.crate
 /num_enum-0.5.4.crate
 /num_enum-0.5.5.crate
+/num_enum-0.5.7.crate
diff --git a/rust-num_enum.spec b/rust-num_enum.spec
index 55f16d5..7e1cf68 100644
--- a/rust-num_enum.spec
+++ b/rust-num_enum.spec
@@ -1,11 +1,11 @@
-# Generated by rust2rpm 20
+# Generated by rust2rpm 21
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate num_enum
 
 Name:           rust-%{crate}
-Version:        0.5.5
+Version:        0.5.7
 Release:        %autorelease
 Summary:        Procedural macros to make inter-operation between primitives and enums easier
 
@@ -16,7 +16,7 @@ Source:         %{crates_source}
 
 ExclusiveArch:  %{rust_arches}
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Procedural macros to make inter-operation between primitives and enums easier.}
@@ -33,9 +33,11 @@ This package contains library source intended for building other packages which
 use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE-APACHE LICENSE-BSD LICENSE-MIT
-%doc README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE-APACHE
+%license %{crate_instdir}/LICENSE-BSD
+%license %{crate_instdir}/LICENSE-MIT
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -47,7 +49,7 @@ This package contains library source intended for building other packages which
 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}+complex-expressions-devel
 Summary:        %{summary}
@@ -59,7 +61,7 @@ This package contains library source intended for building other packages which
 use the "complex-expressions" feature of the "%{crate}" crate.
 
 %files       -n %{name}+complex-expressions-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+external_doc-devel
 Summary:        %{summary}
@@ -71,7 +73,19 @@ This package contains library source intended for building other packages which
 use the "external_doc" feature of the "%{crate}" crate.
 
 %files       -n %{name}+external_doc-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
+
+%package     -n %{name}+nightly-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+nightly-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "nightly" feature of the "%{crate}" crate.
+
+%files       -n %{name}+nightly-devel
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+std-devel
 Summary:        %{summary}
@@ -83,7 +97,7 @@ This package contains library source intended for building other packages which
 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 315406d..e3da22e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (num_enum-0.5.5.crate) = b29f9fb6749f28bb68c85022906602dadd0ff863930a1488c5dd91e86cfd00b8fb923c448a9cb3556fc43920822e252c0b02004f44ca9c6767e4009294da9a0e
+SHA512 (num_enum-0.5.7.crate) = 14749c9fb3cb30366e4915b2afd00b1f005de753ac3458982ef53285efa718c8059bf4804f4db170f43c1978c222aa706f30757c191f8613b8165a54a7c5f4ce