diff --git a/include/bits/unistd.h b/include/bits/unistd.h
index 42896f08da..1a2a89aec7 100644
--- a/include/bits/unistd.h
+++ b/include/bits/unistd.h
@@ -2,7 +2,18 @@
 #define _BITS_UNISTD_H
 
 #define _POSIX_VERSION 200809L
+#define _POSIX_BARRIERS 202405L
+#define _POSIX_MONOTONIC_CLOCK 200112L
 #define _POSIX_REALTIME_SIGNALS 202405L
+#define _POSIX_SEMAPHORES 200112L
+#define _POSIX_SHELL 1
+#define _POSIX_SHARED_MEMORY_OBJECTS 200112L
+#define _POSIX_THREADS 202405L
+#define _POSIX_THREAD_ATTR_STACKADDR 202405L
+#define _POSIX_THREAD_ATTR_STACKSIZE 202405L
+#define _POSIX_TIMEOUTS 202405L
+#define _POSIX_TIMERS 202405L
+#define _XOPEN_SHM 1
 #define _XOPEN_VERSION 700L
 
 #endif