diff --git a/adler-fix-metadata.diff b/adler-fix-metadata.diff
new file mode 100644
index 0000000..72d091e
--- /dev/null
+++ b/adler-fix-metadata.diff
@@ -0,0 +1,11 @@
+--- adler-1.0.2/Cargo.toml	1970-01-01T00:00:00+00:00
++++ adler-1.0.2/Cargo.toml	2022-11-04T16:26:43.450488+00:00
+@@ -55,8 +55,6 @@
+ version = "1.0.0"
+ optional = true
+ package = "rustc-std-workspace-core"
+-[dev-dependencies.criterion]
+-version = "0.3.2"
+ 
+ [features]
+ default = ["std"]
diff --git a/rust-adler.spec b/rust-adler.spec
index b1466cf..953cfb5 100644
--- a/rust-adler.spec
+++ b/rust-adler.spec
@@ -1,25 +1,22 @@
-# Generated by rust2rpm 16
+# Generated by rust2rpm 23
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate adler
 
-Name:           rust-%{crate}
+Name:           rust-adler
 Version:        1.0.2
 Release:        %autorelease
 Summary:        Simple clean-room implementation of the Adler-32 checksum
 
-# Upstream license specification: 0BSD OR MIT OR Apache-2.0
-License:        0BSD or MIT or ASL 2.0
+License:        0BSD OR MIT OR Apache-2.0
 URL:            https://crates.io/crates/adler
 Source:         %{crates_source}
+# Manually created patch for downstream crate metadata changes
+# * drop unused, benchmark-only criterion dev-dependency to speed up builds
+Patch:          adler-fix-metadata.diff
 
-ExclusiveArch:  %{rust_arches}
-%if %{__cargo_skip_build}
-BuildArch:      noarch
-%endif
-
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Simple clean-room implementation of the Adler-32 checksum.}
@@ -32,13 +29,17 @@ BuildArch:      noarch
 
 %description    devel %{_description}
 
-This package contains library source intended for building other packages
-which use "%{crate}" crate.
+This package contains library source intended for building other packages which
+use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE-0BSD LICENSE-APACHE LICENSE-MIT
-%doc README.md CHANGELOG.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE-0BSD
+%license %{crate_instdir}/LICENSE-APACHE
+%license %{crate_instdir}/LICENSE-MIT
+%doc %{crate_instdir}/CHANGELOG.md
+%doc %{crate_instdir}/README.md
+%doc %{crate_instdir}/RELEASE_PROCESS.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -46,11 +47,11 @@ BuildArch:      noarch
 
 %description -n %{name}+default-devel %{_description}
 
-This package contains library source intended for building other packages
-which use "default" feature of "%{crate}" crate.
+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}
@@ -58,11 +59,11 @@ BuildArch:      noarch
 
 %description -n %{name}+std-devel %{_description}
 
-This package contains library source intended for building other packages
-which use "std" feature of "%{crate}" crate.
+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/.rust2rpm.conf b/rust2rpm.conf
similarity index 100%
rename from .rust2rpm.conf
rename to rust2rpm.conf