diff --git a/rust-tiff.spec b/rust-tiff.spec
index b2244b2..74fb99a 100644
--- a/rust-tiff.spec
+++ b/rust-tiff.spec
@@ -1,25 +1,25 @@
-# Generated by rust2rpm 16
+# Generated by rust2rpm 22
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate tiff
 
-Name:           rust-%{crate}
+Name:           rust-tiff
 Version:        0.6.1
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        TIFF decoding and encoding library in pure Rust
 
-# Upstream license specification: MIT
 License:        MIT
 URL:            https://crates.io/crates/tiff
 Source:         %{crates_source}
+# Manually created patch for downstream crate metadata changes
+# * drop unused, benchmark-only criterion dev-dependency to speed up builds
+# * bump miniz_oxide from 0.4.1 to 0.5
+Patch:          tiff-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
-%if %{__cargo_skip_build}
-BuildArch:      noarch
-%endif
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 TIFF decoding and encoding library in pure Rust.}
@@ -32,14 +32,14 @@ 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
-%doc README.md CHANGES.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
-%exclude %{cargo_registry}/%{crate}-%{version_no_tilde}/.github/
+%license %{crate_instdir}/LICENSE
+%doc %{crate_instdir}/CHANGES.md
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -47,11 +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
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
@@ -68,11 +68,14 @@ which use "default" feature of "%{crate}" crate.
 
 %if %{with check}
 %check
-# Test files are missing
+# * files that are required by doctests are not included in published crates
 %cargo_test -- --doc
 %endif
 
 %changelog
+* Tue Aug 09 2022 Fabio Valentini <decathorpe@gmail.com> - 0.6.1-6
+- Bump miniz_oxide from 0.4.1 to 0.5.
+
 * Sat Jul 23 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0.6.1-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild
 
diff --git a/tiff-fix-metadata.diff b/tiff-fix-metadata.diff
new file mode 100644
index 0000000..242815e
--- /dev/null
+++ b/tiff-fix-metadata.diff
@@ -0,0 +1,14 @@
+--- tiff-0.6.1/Cargo.toml	2020-12-12T19:23:19+00:00
++++ tiff-0.6.1/Cargo.toml	2022-08-09T09:24:26.267859+00:00
+@@ -29,10 +29,7 @@
+ package = "jpeg-decoder"
+ 
+ [dependencies.miniz_oxide]
+-version = "0.4.1"
+-features = ["no_extern_crate_alloc"]
++version = "0.5"
+ 
+ [dependencies.weezl]
+ version = "0.1.0"
+-[dev-dependencies.criterion]
+-version = "0.3.1"