diff --git a/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt.h b/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt.h
index 4cfd8c0d..a0b92cfc 100644
--- a/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt.h
+++ b/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt.h
@@ -30,6 +30,7 @@
 #ifndef crypto_scrypt_H
 #define crypto_scrypt_H
 
+#include <limits.h>
 #include <stdint.h>
 #include <stddef.h>
 
diff --git a/src/libsodium/crypto_sign/ed25519/ref10/obsolete.c b/src/libsodium/crypto_sign/ed25519/ref10/obsolete.c
index ecb0716b..98b37b75 100644
--- a/src/libsodium/crypto_sign/ed25519/ref10/obsolete.c
+++ b/src/libsodium/crypto_sign/ed25519/ref10/obsolete.c
@@ -1,4 +1,6 @@
 
+#include <limits.h>
+#include <stdint.h>
 #include <string.h>
 
 #include "crypto_hash_sha512.h"
diff --git a/src/libsodium/crypto_sign/ed25519/ref10/open.c b/src/libsodium/crypto_sign/ed25519/ref10/open.c
index 71e9d1bb..cf265ec6 100644
--- a/src/libsodium/crypto_sign/ed25519/ref10/open.c
+++ b/src/libsodium/crypto_sign/ed25519/ref10/open.c
@@ -1,5 +1,6 @@
 
 #include <limits.h>
+#include <stdint.h>
 #include <string.h>
 
 #include "api.h"