diff --git a/src/unix/bsd/mod.rs b/src/unix/bsd/mod.rs
index 8ebca0930107a..5d5f37d287a2f 100644
--- a/src/unix/bsd/mod.rs
+++ b/src/unix/bsd/mod.rs
@@ -816,6 +816,16 @@ extern "C" {
         f: extern "C" fn(*mut ::c_void) -> *mut ::c_void,
         value: *mut ::c_void,
     ) -> ::c_int;
+    pub fn pthread_setschedparam(
+        native: ::pthread_t,
+        policy: ::c_int,
+        param: *const ::sched_param
+    ) -> ::c_int;
+    pub fn pthread_getschedparam(
+        native: ::pthread_t,
+        policy: *mut ::c_int,
+        param: *mut ::sched_param,
+    ) -> ::c_int;
     pub fn acct(filename: *const ::c_char) -> ::c_int;
     #[cfg_attr(
         all(target_os = "macos", target_arch = "x86"),