diff --git a/idna-fix-metadata.diff b/idna-fix-metadata.diff
new file mode 100644
index 0000000..9af2a89
--- /dev/null
+++ b/idna-fix-metadata.diff
@@ -0,0 +1,12 @@
+--- idna-0.4.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ idna-0.4.0/Cargo.toml	2024-09-22T00:13:34.159734+00:00
+@@ -47,9 +47,6 @@
+ [dev-dependencies.assert_matches]
+ version = "1.3"
+ 
+-[dev-dependencies.bencher]
+-version = "0.1"
+-
+ [dev-dependencies.serde_json]
+ version = "1.0"
+ 
diff --git a/rust-idna0.4.spec b/rust-idna0.4.spec
index 7492344..b08ad5d 100644
--- a/rust-idna0.4.spec
+++ b/rust-idna0.4.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 criterion dev-dependency
+Patch:          idna-fix-metadata.diff
 
 BuildRequires:  cargo-rpm-macros >= 24
 
diff --git a/rust2rpm.toml b/rust2rpm.toml
index dcaf7c3..4fac5dd 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 criterion dev-dependency",
+]