diff --git a/Cargo.toml b/Cargo.toml
index 623bd13..31a41ab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "asn1_der"
-version = "0.7.1"
+version = "0.7.2"
 edition = "2018"
 authors = ["KizzyCode Software Labs./Keziah Biermann <development@kizzycode.de>"]
 keywords = ["asn1", "asn1-der", "serialize", "deserialize", "no_panic"]
diff --git a/src/error.rs b/src/error.rs
index db1eb87..afdbd31 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -91,7 +91,7 @@ impl Asn1DerErrorVariant {
 	/// `no_panic` because either way we have to assume that the code in the standard library is
 	/// correct – see also
 	/// [Is there a way to use potentially panicking code in a #[no_panic] function #16](https://github.com/dtolnay/no-panic/issues/16)_
-	#[inline(never)]
+	#[inline(never)] #[allow(improper_ctypes_definitions)]
 	extern "C" fn write(f: &mut Formatter, kind: &str, desc: &str) -> fmt::Result {
 		write!(f, "{}: {}", kind, desc)
 	}
@@ -148,7 +148,7 @@ impl Asn1DerError {
 	/// `no_panic` because either way we have to assume that the code in the standard library is
 	/// correct – see also
 	/// [Is there a way to use potentially panicking code in a #[no_panic] function #16](https://github.com/dtolnay/no-panic/issues/16)_
-	#[inline(never)]
+	#[inline(never)] #[allow(improper_ctypes_definitions)]
 	extern "C" fn write(f: &mut Formatter, variant: &Asn1DerErrorVariant,
 		source: &Option<ErrorSource>) -> fmt::Result
 	{
diff --git a/src/typed/utf8_string.rs b/src/typed/utf8_string.rs
index f5ff156..5285c86 100644
--- a/src/typed/utf8_string.rs
+++ b/src/typed/utf8_string.rs
@@ -42,7 +42,7 @@ impl<'a> Utf8String<'a> {
 	/// `no_panic` because either way we have to assume that the code in the standard library is
 	/// correct – see also
 	/// [Is there a way to use potentially panicking code in a #[no_panic] function #16](https://github.com/dtolnay/no-panic/issues/16)_
-	#[inline(never)]
+	#[inline(never)] #[allow(improper_ctypes_definitions)]
 	extern "C" fn is_utf8(slice: &[u8]) -> bool {
 		str::from_utf8(slice).is_ok()
 	}