diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index f588f46..796949d 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -4566,6 +4566,7 @@
 #define SSL_R_OLD_SESSION_PRF_HASH_MISMATCH 268
 #define SSL_R_INVALID_SCT_LIST 269
 #define SSL_R_TOO_MUCH_SKIPPED_EARLY_DATA 270
+#define SSL_R_PSK_IDENTITY_BINDER_COUNT_MISMATCH 271
 #define SSL_R_SSLV3_ALERT_CLOSE_NOTIFY 1000
 #define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE 1010
 #define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC 1020