diff --git a/.gitignore b/.gitignore
index 452277f..90efef7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /derive_builder-0.10.2.crate
 /derive_builder-0.11.2.crate
 /derive_builder-0.12.0.crate
+/derive_builder-0.20.0.crate
diff --git a/derive_builder-fix-metadata-auto.diff b/derive_builder-fix-metadata-auto.diff
index c511c15..769888b 100644
--- a/derive_builder-fix-metadata-auto.diff
+++ b/derive_builder-fix-metadata-auto.diff
@@ -1,8 +1,8 @@
---- derive_builder-0.12.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ derive_builder-0.12.0/Cargo.toml	2023-05-25T16:44:31.340112+00:00
-@@ -56,5 +56,3 @@
+--- derive_builder-0.20.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ derive_builder-0.20.0/Cargo.toml	2024-03-18T14:54:32.810266+00:00
+@@ -58,5 +58,3 @@
  default = ["std"]
- std = []
+ std = ["derive_builder_macro/lib_has_std"]
  
 -[target."cfg(compiletests)".dev-dependencies.trybuild]
 -version = "1.0.38"
diff --git a/rust-derive_builder.spec b/rust-derive_builder.spec
index 8530a17..e023b4a 100644
--- a/rust-derive_builder.spec
+++ b/rust-derive_builder.spec
@@ -1,22 +1,21 @@
-# Generated by rust2rpm 24
+# Generated by rust2rpm 26
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate derive_builder
 
 Name:           rust-derive_builder
-Version:        0.12.0
+Version:        0.20.0
 Release:        %autorelease
 Summary:        Rust macro to automatically implement the builder pattern for arbitrary structs
 
-# Upstream license specification: MIT/Apache-2.0
 License:        MIT OR Apache-2.0
 URL:            https://crates.io/crates/derive_builder
 Source:         %{crates_source}
-# Automatically generated patch to strip foreign dependencies
+# Automatically generated patch to strip dependencies and normalize metadata
 Patch:          derive_builder-fix-metadata-auto.diff
 
-BuildRequires:  rust-packaging >= 21
+BuildRequires:  cargo-rpm-macros >= 24
 
 %global _description %{expand:
 Rust macro to automatically implement the builder pattern for arbitrary
@@ -52,6 +51,18 @@ use the "default" feature of the "%{crate}" crate.
 %files       -n %{name}+default-devel
 %ghost %{crate_instdir}/Cargo.toml
 
+%package     -n %{name}+alloc-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+alloc-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "alloc" feature of the "%{crate}" crate.
+
+%files       -n %{name}+alloc-devel
+%ghost %{crate_instdir}/Cargo.toml
+
 %package     -n %{name}+std-devel
 Summary:        %{summary}
 BuildArch:      noarch
@@ -65,7 +76,7 @@ use the "std" feature of the "%{crate}" crate.
 %ghost %{crate_instdir}/Cargo.toml
 
 %prep
-%autosetup -n %{crate}-%{version_no_tilde} -p1
+%autosetup -n %{crate}-%{version} -p1
 %cargo_prep
 
 %generate_buildrequires
diff --git a/rust2rpm.conf b/rust2rpm.conf
deleted file mode 100644
index 0cbbfda..0000000
--- a/rust2rpm.conf
+++ /dev/null
@@ -1,3 +0,0 @@
-[DEFAULT]
-unwanted-features =
-  clippy
diff --git a/rust2rpm.toml b/rust2rpm.toml
new file mode 100644
index 0000000..7d1fbb7
--- /dev/null
+++ b/rust2rpm.toml
@@ -0,0 +1,3 @@
+[features]
+hide = ["clippy"]
+
diff --git a/sources b/sources
index 6479d06..bfe8eec 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (derive_builder-0.12.0.crate) = 3ba06c1d53f69ffca5a56edcd1173e9b5d67b9a5b00025c36fef04fa06a3046188ed503e1c0c8d56b26411b5199c3a152f284965f13ad8b346b6750ca9e00f0f
+SHA512 (derive_builder-0.20.0.crate) = 3fb085259b8219d07c88a233c1aa0e586f6c6ec31c302896c3d2900a062a2e27b4211023f544bf139df3f4f6157773f192a96d9f1e980bf1bb7bd2125d5a7605