diff --git a/libc/include/bits/posix_limits.h b/libc/include/bits/posix_limits.h
index e5846d6..17a39a4 100644
--- a/libc/include/bits/posix_limits.h
+++ b/libc/include/bits/posix_limits.h
@@ -77,7 +77,7 @@
 #define _POSIX_THREAD_CPUTIME _POSIX_VERSION /* CLOCK_THREAD_CPUTIME_ID. */
 #define _POSIX_THREAD_PRIO_INHERIT __BIONIC_POSIX_FEATURE_MISSING
 #define _POSIX_THREAD_PRIO_PROTECT __BIONIC_POSIX_FEATURE_MISSING
-#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION /* Strictly, pthread_attr_getinheritsched/pthread_attr_setinheritsched are missing. */
+#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION /* Strictly, pthread_attr_getinheritsched/pthread_attr_setinheritsched arrived in 28. */
 #define _POSIX_THREAD_PROCESS_SHARED _POSIX_VERSION
 #define _POSIX_THREAD_ROBUST_PRIO_INHERIT __BIONIC_POSIX_FEATURE_MISSING
 #define _POSIX_THREAD_ROBUST_PRIO_PROTECT __BIONIC_POSIX_FEATURE_MISSING
diff --git a/libc/include/pthread.h b/libc/include/pthread.h
index 2253e0d..99515da 100644
--- a/libc/include/pthread.h
+++ b/libc/include/pthread.h
@@ -74,20 +74,24 @@
 #define PTHREAD_STACK_MIN (2 * PAGE_SIZE)
 #endif
 
-#define PTHREAD_CREATE_DETACHED  0x00000001
-#define PTHREAD_CREATE_JOINABLE  0x00000000
+#define PTHREAD_CREATE_DETACHED 1
+#define PTHREAD_CREATE_JOINABLE 0
 
-#define PTHREAD_PROCESS_PRIVATE  0
-#define PTHREAD_PROCESS_SHARED   1
+#define PTHREAD_EXPLICIT_SCHED 0
+#define PTHREAD_INHERIT_SCHED 1
 
-#define PTHREAD_SCOPE_SYSTEM     0
-#define PTHREAD_SCOPE_PROCESS    1
+#define PTHREAD_PROCESS_PRIVATE 0
+#define PTHREAD_PROCESS_SHARED 1
+
+#define PTHREAD_SCOPE_SYSTEM 0
+#define PTHREAD_SCOPE_PROCESS 1
 
 int pthread_atfork(void (*__prepare)(void), void (*__parent)(void), void (*__child)(void)) __INTRODUCED_IN(12);
 
 int pthread_attr_destroy(pthread_attr_t* __attr);
 int pthread_attr_getdetachstate(const pthread_attr_t* __attr, int* __state);
 int pthread_attr_getguardsize(const pthread_attr_t* __attr, size_t* __size);
+int pthread_attr_getinheritsched(const pthread_attr_t* __attr, int* __flag);
 int pthread_attr_getschedparam(const pthread_attr_t* __attr, struct sched_param* __param);
 int pthread_attr_getschedpolicy(const pthread_attr_t* __attr, int* __policy);
 int pthread_attr_getscope(const pthread_attr_t* __attr, int* __scope);
@@ -96,6 +100,7 @@
 int pthread_attr_init(pthread_attr_t* __attr);
 int pthread_attr_setdetachstate(pthread_attr_t* __attr, int __state);
 int pthread_attr_setguardsize(pthread_attr_t* __attr, size_t __size);
+int pthread_attr_setinheritsched(pthread_attr_t* __attr, int __flag);
 int pthread_attr_setschedparam(pthread_attr_t* __attr, const struct sched_param* __param);
 int pthread_attr_setschedpolicy(pthread_attr_t* __attr, int __policy);
 int pthread_attr_setscope(pthread_attr_t* __attr, int __scope);