diff --git a/.gitignore b/.gitignore
index 06ddc5a..50569f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /target-lexicon-0.12.1.crate
 /target-lexicon-0.12.2.crate
 /target-lexicon-0.12.3.crate
+/target-lexicon-0.12.4.crate
diff --git a/rust-target-lexicon.spec b/rust-target-lexicon.spec
index bf66f49..7da4ddb 100644
--- a/rust-target-lexicon.spec
+++ b/rust-target-lexicon.spec
@@ -1,11 +1,11 @@
-# Generated by rust2rpm 20
+# Generated by rust2rpm 21
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate target-lexicon
 
 Name:           rust-%{crate}
-Version:        0.12.3
+Version:        0.12.4
 Release:        %autorelease
 Summary:        Targeting utilities for compilers and related tools
 
@@ -16,7 +16,7 @@ Source:         %{crates_source}
 
 ExclusiveArch:  %{rust_arches}
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Targeting utilities for compilers and related tools.}
@@ -33,9 +33,9 @@ This package contains library source intended for building other packages which
 use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE
-%doc README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -47,7 +47,7 @@ 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}+std-devel
 Summary:        %{summary}
@@ -59,7 +59,7 @@ 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 b8ee04e..3c7a435 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (target-lexicon-0.12.3.crate) = 4ba0de71cf27c4ee330c9b61fc0318cfa3e179b57a7b0a79f296e0b33602c664c4ee2a676d09e0e104add2e0b56144cb5ddcc096a16f332f67862ee94b052f86
+SHA512 (target-lexicon-0.12.4.crate) = 194fe1946ad8d9fdb383bf8a65374e24d216382c1ed5379dabc98d58842512624c32838b8d6d0658d866f6559d37f1343a30c5809e8914dd85790399252b3e06