diff --git a/.gitignore b/.gitignore
index 4092376..a1a4928 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /pyo3-build-config-0.14.5.crate
 /pyo3-build-config-0.15.1.crate
 /pyo3-build-config-0.15.2.crate
+/pyo3-build-config-0.16.6.crate
diff --git a/README.md b/README.md
deleted file mode 100644
index 289187f..0000000
--- a/README.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# rust-pyo3-build-config
-
-Build configuration for the PyO3 ecosystem
\ No newline at end of file
diff --git a/pyo3-build-config-fix-metadata.diff b/pyo3-build-config-fix-metadata.diff
new file mode 100644
index 0000000..6a5cd71
--- /dev/null
+++ b/pyo3-build-config-fix-metadata.diff
@@ -0,0 +1,19 @@
+--- pyo3-build-config-0.16.6/Cargo.toml	1970-01-01T00:00:01+00:00
++++ pyo3-build-config-0.16.6/Cargo.toml	2023-01-17T18:52:28.305934+00:00
+@@ -35,16 +35,8 @@
+ [dependencies.once_cell]
+ version = "1"
+ 
+-[dependencies.python3-dll-a]
+-version = "0.2.2"
+-optional = true
+-
+ [dependencies.target-lexicon]
+ version = "0.12"
+-
+-[build-dependencies.python3-dll-a]
+-version = "0.2.2"
+-optional = true
+ 
+ [build-dependencies.target-lexicon]
+ version = "0.12"
diff --git a/rust-pyo3-build-config.spec b/rust-pyo3-build-config.spec
index e41e831..d399cae 100644
--- a/rust-pyo3-build-config.spec
+++ b/rust-pyo3-build-config.spec
@@ -1,20 +1,20 @@
-# Generated by rust2rpm 21
+# Generated by rust2rpm 23
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate pyo3-build-config
 
-Name:           rust-%{crate}
-Version:        0.15.2
+Name:           rust-pyo3-build-config
+Version:        0.16.6
 Release:        %autorelease
 Summary:        Build configuration for the PyO3 ecosystem
 
-# Upstream license specification: Apache-2.0
-License:        ASL 2.0
+License:        Apache-2.0
 URL:            https://crates.io/crates/pyo3-build-config
 Source:         %{crates_source}
-
-ExclusiveArch:  %{rust_arches}
+# Manually created patch for downstream crate metadata changes
+# * drop MSVC- and MinGW-only "python3-dll-a" dependency
+Patch:          pyo3-build-config-fix-metadata.diff
 
 BuildRequires:  rust-packaging >= 21
 
@@ -72,18 +72,6 @@ use the "abi3-py310" feature of the "%{crate}" crate.
 %files       -n %{name}+abi3-py310-devel
 %ghost %{crate_instdir}/Cargo.toml
 
-%package     -n %{name}+abi3-py36-devel
-Summary:        %{summary}
-BuildArch:      noarch
-
-%description -n %{name}+abi3-py36-devel %{_description}
-
-This package contains library source intended for building other packages which
-use the "abi3-py36" feature of the "%{crate}" crate.
-
-%files       -n %{name}+abi3-py36-devel
-%ghost %{crate_instdir}/Cargo.toml
-
 %package     -n %{name}+abi3-py37-devel
 Summary:        %{summary}
 BuildArch:      noarch
@@ -120,6 +108,18 @@ use the "abi3-py39" feature of the "%{crate}" crate.
 %files       -n %{name}+abi3-py39-devel
 %ghost %{crate_instdir}/Cargo.toml
 
+%package     -n %{name}+extension-module-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+extension-module-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "extension-module" feature of the "%{crate}" crate.
+
+%files       -n %{name}+extension-module-devel
+%ghost %{crate_instdir}/Cargo.toml
+
 %package     -n %{name}+resolve-config-devel
 Summary:        %{summary}
 BuildArch:      noarch
diff --git a/sources b/sources
index 0631442..9462b94 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (pyo3-build-config-0.15.2.crate) = e05e68bc54bc7287d3fb037251767dcbcb512e3cae29948507deb7e0ca18ec4d7fd5d598f1dca1a595b6edcd5395fb443189fe56724e67ef68422bf050b10324
+SHA512 (pyo3-build-config-0.16.6.crate) = a015bb4c328f0d1e643d64831e029bbd66cbf635ab616533f35aefce59abf1c5d596099feaccb81bff02e863867c14f975ce6fc55bc05d99ea47b5f6fdc2da5d