diff --git a/.gitignore b/.gitignore
index c23257c..f4788eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,4 @@
 /libflate-1.1.2.crate
 /libflate-1.2.0.crate
 /libflate-1.4.0.crate
+/libflate-2.1.0.crate
diff --git a/libflate-fix-metadata.diff b/libflate-fix-metadata.diff
deleted file mode 100644
index a30111b..0000000
--- a/libflate-fix-metadata.diff
+++ /dev/null
@@ -1,27 +0,0 @@
---- libflate-1.4.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ libflate-1.4.0/Cargo.toml	2023-05-22T21:42:54.038100+00:00
-@@ -29,12 +29,6 @@
- [dependencies.adler32]
- version = "1"
- 
--[dependencies.core2]
--version = "0.4"
--features = ["alloc"]
--optional = true
--default_features = false
--
- [dependencies.crc32fast]
- version = "1.1.1"
- 
-@@ -45,11 +39,5 @@
- [dev-dependencies.clap]
- version = "2"
- 
--[features]
--no_std = [
--    "libflate_lz77/no_std",
--    "core2",
--]
--
- [badges.coveralls]
- repository = "sile/libflate"
diff --git a/rust-libflate.spec b/rust-libflate.spec
index da9dc9e..5985064 100644
--- a/rust-libflate.spec
+++ b/rust-libflate.spec
@@ -1,22 +1,19 @@
-# Generated by rust2rpm 24
+# Generated by rust2rpm 26
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate libflate
 
 Name:           rust-libflate
-Version:        1.4.0
+Version:        2.1.0
 Release:        %autorelease
-Summary:        Rust implementation of DEFLATE algorithm and related formats (ZLIB, GZIP)
+Summary:        Rust implementation of DEFLATE algorithm and related formats
 
 License:        MIT
 URL:            https://crates.io/crates/libflate
 Source:         %{crates_source}
-# Manually created patch for downstream crate metadata changes
-# * drop unused no_std feature with missing dependencies
-Patch:          libflate-fix-metadata.diff
 
-BuildRequires:  rust-packaging >= 21
+BuildRequires:  cargo-rpm-macros >= 24
 
 %global _description %{expand:
 A Rust implementation of DEFLATE algorithm and related formats (ZLIB,
@@ -50,8 +47,20 @@ use the "default" feature of the "%{crate}" crate.
 %files       -n %{name}+default-devel
 %ghost %{crate_instdir}/Cargo.toml
 
+%package     -n %{name}+std-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+std-devel %{_description}
+
+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 %{crate_instdir}/Cargo.toml
+
 %prep
-%autosetup -n %{crate}-%{version_no_tilde} -p1
+%autosetup -n %{crate}-%{version} -p1
 %cargo_prep
 
 %generate_buildrequires
diff --git a/sources b/sources
index e76f1bf..a63fa6c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libflate-1.4.0.crate) = ebdfdad0b67e835218a269a2b00389b86afbb95cb4bdf9accd4ea3c866917dbdd756a91c38ca34695ebbb80b02055eac738fa4144f86a61116cf477af52e3838
+SHA512 (libflate-2.1.0.crate) = 00cba931f92f50ba527aab2303533e72d183ba1ff7b61d396b50d0a1fc0f31dd348a506cc87ad417879108c03f0b500d05c1b7abf48e92473e0d472594d4151c