diff --git a/libs/libvpx/.update b/libs/libvpx/.update
index 09e6d8ef57..815a0a77a8 100644
--- a/libs/libvpx/.update
+++ b/libs/libvpx/.update
@@ -1 +1 @@
-Wed Feb 27 11:26:31 MST 2019
+Thu Mar 19 03:08:11 UTC 2020
diff --git a/libs/libvpx/vp8/common/threading.h b/libs/libvpx/vp8/common/threading.h
index 7a637cdff2..f2e5e8c54f 100644
--- a/libs/libvpx/vp8/common/threading.h
+++ b/libs/libvpx/vp8/common/threading.h
@@ -171,11 +171,11 @@ static inline int sem_destroy(sem_t *sem) {
 #define sem_wait(sem) (semaphore_wait(*sem))
 #define sem_post(sem) semaphore_signal(*sem)
 #define sem_destroy(sem) semaphore_destroy(mach_task_self(), *sem)
-#define thread_sleep(nms) { struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;nanosleep(&ts, NULL);} 
+#define thread_sleep(nms) { struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;sched_yield();nanosleep(&ts, NULL);} 
 #else
 #include <unistd.h>
 #include <sched.h>
-#define thread_sleep(nms) {struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;nanosleep(&ts, NULL);}
+#define thread_sleep(nms) {struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;sched_yield();clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);}
 #endif
 /* Not Windows. Assume pthreads */