diff --git a/.gitignore b/.gitignore
index e6cf64f..04f7b80 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /tracing-core-0.1.20.crate
 /tracing-core-0.1.21.crate
 /tracing-core-0.1.22.crate
+/tracing-core-0.1.23.crate
diff --git a/rust-tracing-core.spec b/rust-tracing-core.spec
index 0d1dab1..2531b8e 100644
--- a/rust-tracing-core.spec
+++ b/rust-tracing-core.spec
@@ -1,11 +1,11 @@
-# Generated by rust2rpm 20
+# Generated by rust2rpm 21
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate tracing-core
 
 Name:           rust-%{crate}
-Version:        0.1.22
+Version:        0.1.23
 Release:        %autorelease
 Summary:        Core primitives for application-level tracing
 
@@ -19,7 +19,7 @@ Patch0:         tracing-core-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Core primitives for application-level tracing.}
@@ -36,11 +36,12 @@ This package contains library source intended for building other packages which
 use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE LICENSE-lazy_static LICENSE-spin
-%doc CHANGELOG.md README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
-# exclude LICENSE file copies from -devel package
-%exclude %{cargo_registry}/%{crate}-%{version_no_tilde}/LICENSE-*
+%license %{crate_instdir}/LICENSE
+%license %{crate_instdir}/src/lazy_static/LICENSE
+%license %{crate_instdir}/src/spin/LICENSE
+%doc %{crate_instdir}/CHANGELOG.md
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -52,7 +53,7 @@ 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}+lazy_static-devel
 Summary:        %{summary}
@@ -64,7 +65,7 @@ This package contains library source intended for building other packages which
 use the "lazy_static" feature of the "%{crate}" crate.
 
 %files       -n %{name}+lazy_static-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %package     -n %{name}+std-devel
 Summary:        %{summary}
@@ -76,15 +77,11 @@ 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
 %cargo_prep
-# copy LICENSE files for bundled sources:
-# they are also MIT, but with different copyright statements
-cp -p src/lazy_static/LICENSE LICENSE-lazy_static
-cp -p src/spin/LICENSE LICENSE-spin
 
 %generate_buildrequires
 %cargo_generate_buildrequires
diff --git a/sources b/sources
index 713a633..2239611 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (tracing-core-0.1.22.crate) = 500e74a0a3a54599bb4614b6377d9d721635dd4ce0119697fb234725db8b60e6aecbb850d7dd311af4796e47b060832fe3be39324d484a039e9b8a08d36c3ab2
+SHA512 (tracing-core-0.1.23.crate) = c01d58dd814d0d9d71a631284c6e8fd5881e8728d79d3715f246530d474900f3b0d396b88f9358f3521e5b171ad577003ae5dd3994d66fa3e016970f6df5184f
diff --git a/tracing-core-fix-metadata.diff b/tracing-core-fix-metadata.diff
index 31ca28b..a6780d9 100644
--- a/tracing-core-fix-metadata.diff
+++ b/tracing-core-fix-metadata.diff
@@ -1,5 +1,5 @@
---- tracing-core-0.1.22/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ tracing-core-0.1.22/Cargo.toml	2022-02-05T23:21:14.801028+00:00
+--- tracing-core-0.1.23/Cargo.toml	1970-01-01T00:00:01+00:00
++++ tracing-core-0.1.23/Cargo.toml	2022-03-31T09:08:38.257281+00:00
 @@ -31,11 +31,7 @@
  optional = true