diff --git a/newlib/libc/include/regex.h b/newlib/libc/include/regex.h
index 4da1a374e..2cb2e6c8a 100644
--- a/newlib/libc/include/regex.h
+++ b/newlib/libc/include/regex.h
@@ -38,6 +38,7 @@
 #define	_REGEX_H_
 
 #include <sys/cdefs.h>
+#include <sys/types.h>
 
 /* types */
 typedef off_t regoff_t;
diff --git a/newlib/libc/include/stdatomic.h b/newlib/libc/include/stdatomic.h
index 13d1e1762..0ccc8af09 100644
--- a/newlib/libc/include/stdatomic.h
+++ b/newlib/libc/include/stdatomic.h
@@ -30,6 +30,8 @@
 #ifndef _STDATOMIC_H_
 #define	_STDATOMIC_H_
 
+#include "stdint.h"
+
 #include <sys/cdefs.h>
 #include <sys/_types.h>
 
diff --git a/newlib/libc/include/sys/utime.h b/newlib/libc/include/sys/utime.h
index 5e937f103..de86af58f 100644
--- a/newlib/libc/include/sys/utime.h
+++ b/newlib/libc/include/sys/utime.h
@@ -9,6 +9,8 @@
 extern "C" {
 #endif
 
+#include <sys/_timeval.h>
+
 struct utimbuf 
 {
   time_t actime;