diff --git a/boring-sys/src/lib.rs b/boring-sys/src/lib.rs
index da297649..4c783232 100644
--- a/boring-sys/src/lib.rs
+++ b/boring-sys/src/lib.rs
@@ -3,6 +3,7 @@
     clippy::redundant_static_lifetimes,
     clippy::too_many_arguments,
     clippy::unreadable_literal,
+    clippy::upper_case_acronyms,
     improper_ctypes,
     non_camel_case_types,
     non_snake_case,
diff --git a/boring/src/ssl/bio.rs b/boring/src/ssl/bio.rs
index bef906f9..9d02fc00 100644
--- a/boring/src/ssl/bio.rs
+++ b/boring/src/ssl/bio.rs
@@ -213,7 +213,7 @@ use ffi::{BIO_get_data, BIO_set_data, BIO_set_flags, BIO_set_init};
 #[allow(bad_style)]
 unsafe fn BIO_set_num(_bio: *mut ffi::BIO, _num: c_int) {}
 
-#[allow(bad_style)]
+#[allow(bad_style, clippy::upper_case_acronyms)]
 struct BIO_METHOD(*mut ffi::BIO_METHOD);
 
 impl BIO_METHOD {