diff --git a/idna-fix-metadata.diff b/idna-fix-metadata.diff
new file mode 100644
index 0000000..5278727
--- /dev/null
+++ b/idna-fix-metadata.diff
@@ -0,0 +1,12 @@
+--- idna-0.5.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ idna-0.5.0/Cargo.toml	2024-09-14T19:58:41.428643+00:00
+@@ -50,9 +50,6 @@
+ [dev-dependencies.assert_matches]
+ version = "1.3"
+ 
+-[dev-dependencies.bencher]
+-version = "0.1"
+-
+ [dev-dependencies.serde_json]
+ version = "1.0"
+ 
diff --git a/rust-idna.spec b/rust-idna.spec
index 28f3dc1..640c3f7 100644
--- a/rust-idna.spec
+++ b/rust-idna.spec
@@ -1,4 +1,4 @@
-# Generated by rust2rpm 25
+# Generated by rust2rpm 26
 %bcond_without check
 %global debug_package %{nil}
 
@@ -12,6 +12,9 @@ Summary:        IDNA (Internationalizing Domain Names in Applications) and Punyc
 License:        MIT OR Apache-2.0
 URL:            https://crates.io/crates/idna
 Source:         %{crates_source}
+# Manually created patch for downstream crate metadata changes
+# * drop unused, benchmark-only bencher dev-dependency
+Patch:          idna-fix-metadata.diff
 
 BuildRequires:  cargo-rpm-macros >= 24
 
diff --git a/rust2rpm.toml b/rust2rpm.toml
index dcaf7c3..2464c4b 100644
--- a/rust2rpm.toml
+++ b/rust2rpm.toml
@@ -1,3 +1,6 @@
 [package]
 summary = "IDNA (Internationalizing Domain Names in Applications) and Punycode"
+cargo-toml-patch-comments = [
+    "drop unused, benchmark-only bencher dev-dependency",
+]