diff --git a/.gitignore b/.gitignore
index 40f968b..68571e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /clap_derive-3.0.6.crate
 /clap_derive-3.0.14.crate
 /clap_derive-3.1.2.crate
+/clap_derive-3.1.18.crate
diff --git a/rust-clap_derive.spec b/rust-clap_derive.spec
index b28e913..e08a2da 100644
--- a/rust-clap_derive.spec
+++ b/rust-clap_derive.spec
@@ -1,11 +1,11 @@
-# Generated by rust2rpm 20
+# Generated by rust2rpm 21
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate clap_derive
 
 Name:           rust-%{crate}
-Version:        3.1.2
+Version:        3.1.18
 Release:        %autorelease
 Summary:        Parse command line argument by defining a struct, derive crate
 
@@ -16,7 +16,7 @@ Source:         %{crates_source}
 
 ExclusiveArch:  %{rust_arches}
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Parse command line argument by defining a struct, derive crate.}
@@ -33,9 +33,10 @@ This package contains library source intended for building other packages which
 use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE-APACHE LICENSE-MIT
-%doc README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE-APACHE
+%license %{crate_instdir}/LICENSE-MIT
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -47,7 +48,7 @@ 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}+debug-devel
 Summary:        %{summary}
@@ -59,7 +60,19 @@ This package contains library source intended for building other packages which
 use the "debug" feature of the "%{crate}" crate.
 
 %files       -n %{name}+debug-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
+
+%package     -n %{name}+unstable-v4-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+unstable-v4-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "unstable-v4" feature of the "%{crate}" crate.
+
+%files       -n %{name}+unstable-v4-devel
+%ghost %{crate_instdir}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
diff --git a/sources b/sources
index 38d7876..2b17efb 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (clap_derive-3.1.2.crate) = c09644da408105224ddf23fa6d1e8da39ebf06edaa8f8d03789f9f2f5375f38c17b1865ae148c6f266248669955599bb3947648045c72d7c49dc48334c8c779a
+SHA512 (clap_derive-3.1.18.crate) = 9bf92e45de15bdfe1ca9a1363f1d243b8df1e5e7d957d6240fa351387b362ef91dc9acffea7256c2161ae8472e35ee2cd678c0bee1f9a27771ae9f4f3f71b351