diff --git a/rust-url1.spec b/rust-url1.spec
index db7a0db..1aeeeb4 100644
--- a/rust-url1.spec
+++ b/rust-url1.spec
@@ -1,4 +1,4 @@
-# Generated by rust2rpm 10
+# Generated by rust2rpm 15
 %bcond_with check
 %global debug_package %{nil}
 
@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}1
 Version:        1.7.2
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        URL library for Rust, based on the WHATWG URL Standard
 
 # Upstream license specification: MIT/Apache-2.0
@@ -15,6 +15,7 @@ URL:            https://crates.io/crates/url
 Source:         %{crates_source}
 # Initial patched metadata
 # * Exclude CI files, https://github.com/servo/rust-url/pull/467
+# * drop optional + unused serde feature (serde < 1 no longer available)
 Patch0:         url-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
@@ -41,7 +42,7 @@ which use "%{crate}" crate.
 %files          devel
 %license LICENSE-MIT LICENSE-APACHE
 %doc README.md UPGRADING.md
-%{cargo_registry}/%{crate}-%{version}/
+%{cargo_registry}/%{crate}-%{version_no_tilde}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -53,7 +54,7 @@ This package contains library source intended for building other packages
 which use "default" feature of "%{crate}" crate.
 
 %files       -n %{name}+default-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %package     -n %{name}+encoding-devel
 Summary:        %{summary}
@@ -65,7 +66,7 @@ This package contains library source intended for building other packages
 which use "encoding" feature of "%{crate}" crate.
 
 %files       -n %{name}+encoding-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %package     -n %{name}+heap_size-devel
 Summary:        %{summary}
@@ -77,7 +78,7 @@ This package contains library source intended for building other packages
 which use "heap_size" feature of "%{crate}" crate.
 
 %files       -n %{name}+heap_size-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %package     -n %{name}+heapsize-devel
 Summary:        %{summary}
@@ -89,7 +90,7 @@ This package contains library source intended for building other packages
 which use "heapsize" feature of "%{crate}" crate.
 
 %files       -n %{name}+heapsize-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %package     -n %{name}+query_encoding-devel
 Summary:        %{summary}
@@ -101,7 +102,7 @@ This package contains library source intended for building other packages
 which use "query_encoding" feature of "%{crate}" crate.
 
 %files       -n %{name}+query_encoding-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %package     -n %{name}+rustc-serialize-devel
 Summary:        %{summary}
@@ -113,19 +114,7 @@ This package contains library source intended for building other packages
 which use "rustc-serialize" feature of "%{crate}" crate.
 
 %files       -n %{name}+rustc-serialize-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
-
-%package     -n %{name}+serde-devel
-Summary:        %{summary}
-BuildArch:      noarch
-
-%description -n %{name}+serde-devel %{_description}
-
-This package contains library source intended for building other packages
-which use "serde" feature of "%{crate}" crate.
-
-%files       -n %{name}+serde-devel
-%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
@@ -146,6 +135,9 @@ which use "serde" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sun Nov 08 2020 Fabio Valentini <decathorpe@gmail.com> - 1.7.2-4
+- Drop optional serde feature that has missing dependencies.
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.2-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
 
diff --git a/url-fix-metadata.diff b/url-fix-metadata.diff
index 2cbfc21..3914bb5 100644
--- a/url-fix-metadata.diff
+++ b/url-fix-metadata.diff
@@ -1,5 +1,5 @@
 --- url-1.7.2/Cargo.toml	1970-01-01T00:00:00+00:00
-+++ url-1.7.2/Cargo.toml	2019-08-25T06:47:13.777099+00:00
++++ url-1.7.2/Cargo.toml	2020-11-08T19:39:28.387877+00:00
 @@ -21,6 +21,7 @@
  categories = ["parser-implementations", "web-programming", "encoding"]
  license = "MIT/Apache-2.0"
@@ -8,3 +8,13 @@
  [package.metadata.docs.rs]
  features = ["query_encoding"]
  
+@@ -58,9 +59,6 @@
+ version = "0.3"
+ optional = true
+ 
+-[dependencies.serde]
+-version = ">=0.6.1, <0.9"
+-optional = true
+ [dev-dependencies.bencher]
+ version = "0.1"
+