diff --git a/libc/bionic/locale.cpp b/libc/bionic/locale.cpp
index 681e038..90aa7b8 100644
--- a/libc/bionic/locale.cpp
+++ b/libc/bionic/locale.cpp
@@ -26,6 +26,7 @@
  * SUCH DAMAGE.
  */
 
+#include <errno.h>
 #include <locale.h>
 #include <pthread.h>
 #include <stdlib.h>
diff --git a/libc/bionic/mntent.cpp b/libc/bionic/mntent.cpp
index f5a8eaa..4afacda 100644
--- a/libc/bionic/mntent.cpp
+++ b/libc/bionic/mntent.cpp
@@ -27,6 +27,7 @@
  */
 
 #include <mntent.h>
+#include <string.h>
 
 #include "private/ThreadLocalBuffer.h"
 
diff --git a/libc/bionic/pthread_atfork.cpp b/libc/bionic/pthread_atfork.cpp
index b845f7d..82e2b59 100644
--- a/libc/bionic/pthread_atfork.cpp
+++ b/libc/bionic/pthread_atfork.cpp
@@ -28,6 +28,7 @@
 
 #include <errno.h>
 #include <pthread.h>
+#include <stdlib.h>
 
 struct atfork_t {
   atfork_t* next;
diff --git a/libc/bionic/pthread_internals.cpp b/libc/bionic/pthread_internals.cpp
index 19c00d4..2270d96 100644
--- a/libc/bionic/pthread_internals.cpp
+++ b/libc/bionic/pthread_internals.cpp
@@ -28,6 +28,8 @@
 
 #include "pthread_internal.h"
 
+#include <stdlib.h>
+
 #include "private/bionic_futex.h"
 #include "private/bionic_tls.h"
 #include "private/ScopedPthreadMutexLocker.h"
diff --git a/libc/bionic/pthread_key.cpp b/libc/bionic/pthread_key.cpp
index 27eab27..b47ef22 100644
--- a/libc/bionic/pthread_key.cpp
+++ b/libc/bionic/pthread_key.cpp
@@ -26,6 +26,7 @@
  * SUCH DAMAGE.
  */
 
+#include <errno.h>
 #include <pthread.h>
 
 #include "private/bionic_tls.h"
diff --git a/libc/bionic/raise.cpp b/libc/bionic/raise.cpp
index f69d90b..0dd0ad7 100644
--- a/libc/bionic/raise.cpp
+++ b/libc/bionic/raise.cpp
@@ -27,6 +27,7 @@
  */
 
 #include <pthread.h>
+#include <signal.h>
 
 int raise(int sig) {
   int rc = pthread_kill(pthread_self(), sig);