diff --git a/crypto/pkcs8/p5_pbev2.cc b/crypto/pkcs8/p5_pbev2.cc
index 5da0cdb86..e70bdb54d 100644
--- a/crypto/pkcs8/p5_pbev2.cc
+++ b/crypto/pkcs8/p5_pbev2.cc
@@ -19,6 +19,7 @@
 
 #include <openssl/bytestring.h>
 #include <openssl/cipher.h>
+#include <openssl/digest.h>
 #include <openssl/err.h>
 #include <openssl/mem.h>
 #include <openssl/nid.h>
diff --git a/crypto/pkcs8/pkcs8_x509.cc b/crypto/pkcs8/pkcs8_x509.cc
index 5f5286f04..168912b60 100644
--- a/crypto/pkcs8/pkcs8_x509.cc
+++ b/crypto/pkcs8/pkcs8_x509.cc
@@ -26,6 +26,7 @@
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
 #include <openssl/mem.h>
+#include <openssl/nid.h>
 #include <openssl/rand.h>
 #include <openssl/x509.h>