diff --git a/adler-fix-metadata.diff b/adler-fix-metadata.diff
index 72d091e..4e77cf0 100644
--- a/adler-fix-metadata.diff
+++ b/adler-fix-metadata.diff
@@ -1,11 +1,24 @@
 --- adler-1.0.2/Cargo.toml	1970-01-01T00:00:00+00:00
-+++ adler-1.0.2/Cargo.toml	2022-11-04T16:26:43.450488+00:00
-@@ -55,8 +55,6 @@
- version = "1.0.0"
- optional = true
- package = "rustc-std-workspace-core"
++++ adler-1.0.2/Cargo.toml	2023-03-12T20:33:40.955275+00:00
+@@ -44,21 +44,6 @@
+ replace = "https://docs.rs/adler/{{version}}"
+ search = "https://docs.rs/adler/[a-z0-9\\.-]+"
+ 
+-[[bench]]
+-name = "bench"
+-harness = false
+-[dependencies.compiler_builtins]
+-version = "0.1.2"
+-optional = true
+-
+-[dependencies.core]
+-version = "1.0.0"
+-optional = true
+-package = "rustc-std-workspace-core"
 -[dev-dependencies.criterion]
 -version = "0.3.2"
- 
+-
  [features]
  default = ["std"]
+-rustc-dep-of-std = ["core", "compiler_builtins"]
+ std = []
diff --git a/rust-adler.spec b/rust-adler.spec
index 953cfb5..b82e322 100644
--- a/rust-adler.spec
+++ b/rust-adler.spec
@@ -1,4 +1,4 @@
-# Generated by rust2rpm 23
+# Generated by rust2rpm 24
 %bcond_without check
 %global debug_package %{nil}
 
@@ -14,12 +14,13 @@ URL:            https://crates.io/crates/adler
 Source:         %{crates_source}
 # Manually created patch for downstream crate metadata changes
 # * drop unused, benchmark-only criterion dev-dependency to speed up builds
+# * remove dependencies on compiler internals
 Patch:          adler-fix-metadata.diff
 
 BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
-Simple clean-room implementation of the Adler-32 checksum.}
+A simple clean-room implementation of the Adler-32 checksum.}
 
 %description %{_description}
 
diff --git a/rust2rpm.conf b/rust2rpm.conf
deleted file mode 100644
index 302578b..0000000
--- a/rust2rpm.conf
+++ /dev/null
@@ -1,5 +0,0 @@
-[DEFAULT]
-unwanted-features =
-  compiler_builtins
-  core
-  rustc-dep-of-std