diff --git a/include/zephyr/posix/sched.h b/include/zephyr/posix/sched.h
index 03b568fadea..b337cc2c022 100644
--- a/include/zephyr/posix/sched.h
+++ b/include/zephyr/posix/sched.h
@@ -10,6 +10,8 @@
 
 #include "posix_types.h"
 
+#include <time.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -53,6 +55,7 @@ int sched_getscheduler(pid_t pid);
 
 int sched_setparam(pid_t pid, const struct sched_param *param);
 int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param);
+int sched_rr_get_interval(pid_t pid, struct timespec *interval);
 
 #ifdef __cplusplus
 }
diff --git a/lib/posix/options/sched.c b/lib/posix/options/sched.c
index 195c5895752..be174d92cd6 100644
--- a/lib/posix/options/sched.c
+++ b/lib/posix/options/sched.c
@@ -101,3 +101,13 @@ int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param)
 
 	return -1;
 }
+
+int sched_rr_get_interval(pid_t pid, struct timespec *interval)
+{
+	ARG_UNUSED(pid);
+	ARG_UNUSED(interval);
+
+	errno = ENOSYS;
+
+	return -1;
+}