diff --git a/.gitignore b/.gitignore
index 75a94a5..c20b3d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /miniz_oxide-0.3.5.crate
 /miniz_oxide-0.3.6.crate
 /miniz_oxide-0.3.7.crate
+/miniz_oxide-0.4.3.crate
diff --git a/miniz_oxide-fix-metadata.diff b/miniz_oxide-fix-metadata.diff
new file mode 100644
index 0000000..b060170
--- /dev/null
+++ b/miniz_oxide-fix-metadata.diff
@@ -0,0 +1,25 @@
+--- miniz_oxide-0.4.3/Cargo.toml	2020-10-07T15:20:30+00:00
++++ miniz_oxide-0.4.3/Cargo.toml	2020-10-26T19:10:01.960509+00:00
+@@ -32,22 +32,5 @@
+ version = "0.2.3"
+ default-features = false
+ 
+-[dependencies.alloc]
+-version = "1.0.0"
+-optional = true
+-package = "rustc-std-workspace-alloc"
+-
+-[dependencies.compiler_builtins]
+-version = "0.1.2"
+-optional = true
+-
+-[dependencies.core]
+-version = "1.0.0"
+-optional = true
+-package = "rustc-std-workspace-core"
+ [build-dependencies.autocfg]
+ version = "1.0"
+-
+-[features]
+-no_extern_crate_alloc = []
+-rustc-dep-of-std = ["core", "alloc", "compiler_builtins", "adler/rustc-dep-of-std"]
diff --git a/rust-miniz_oxide.spec b/rust-miniz_oxide.spec
index 252541e..7eb1fda 100644
--- a/rust-miniz_oxide.spec
+++ b/rust-miniz_oxide.spec
@@ -1,19 +1,21 @@
 # Generated by rust2rpm 13
-# * miniz.c is not included in distribution
-%bcond_with check
+%bcond_without check
 %global debug_package %{nil}
 
 %global crate miniz_oxide
 
 Name:           rust-%{crate}
-Version:        0.3.7
-Release:        2%{?dist}
+Version:        0.4.3
+Release:        1%{?dist}
 Summary:        DEFLATE compression and decompression library rewritten in Rust based on miniz
 
-# Upstream license specification: MIT
-License:        MIT
+# Upstream license specification: MIT OR Zlib OR Apache-2.0
+License:        MIT or zlib or ASL 2.0
 URL:            https://crates.io/crates/miniz_oxide
 Source:         %{crates_source}
+# Initial patched metadata
+# * remove dependencies on compiler internals
+Patch0:         miniz_oxide-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 %if %{__cargo_skip_build}
@@ -37,7 +39,7 @@ This package contains library source intended for building other packages
 which use "%{crate}" crate.
 
 %files          devel
-%license LICENSE
+%license LICENSE LICENSE-APACHE.md LICENSE-MIT.md LICENSE-ZLIB.md
 %doc Readme.md
 %{cargo_registry}/%{crate}-%{version_no_tilde}/
 
@@ -55,6 +57,8 @@ which use "default" feature of "%{crate}" crate.
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
+# remove executable bit from build.rs, which breaks brp-mangle-shebangs
+chmod -x build.rs
 %cargo_prep
 
 %generate_buildrequires
@@ -72,6 +76,9 @@ which use "default" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Mon Oct 26 2020 Fabio Valentini <decathorpe@gmail.com> - 0.4.3-1
+- Update to version 0.4.3.
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.7-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
 
diff --git a/sources b/sources
index ee5b551..c1d9a1d 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (miniz_oxide-0.3.7.crate) = d4eff239f8d6e947b94619e80fe03ed32aabd1a6393f63145d70ed7f08c51c45c7261d8157bf61c78d1637ea1f71ef15f9813ec733efd8afe6aa14810888718e
+SHA512 (miniz_oxide-0.4.3.crate) = 8c0e2b3a585a0986a61977d4459adb1a7c396ab53f4f688dcbeb2a09c60878b0423f54fd1879c190f5c64690a2473ed2a07d4162a650f6c39f402f6b27e863b7