diff --git a/deps/mbedtls/mbedtls/sha512.h b/deps/mbedtls/mbedtls/sha512.h
index 70fd64e1c8..2232042f4d 100644
--- a/deps/mbedtls/mbedtls/sha512.h
+++ b/deps/mbedtls/mbedtls/sha512.h
@@ -98,7 +98,7 @@ void mbedtls_sha512_update( mbedtls_sha512_context *ctx, const unsigned char *in
  * \param ctx      SHA-512 context
  * \param output   SHA-384/512 checksum result
  */
-void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, unsigned char output[64] );
+void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, unsigned char *output );
 
 #ifdef __cplusplus
 }
@@ -131,7 +131,7 @@ void mbedtls_sha512( const unsigned char *input, size_t ilen,
 int mbedtls_sha512_self_test( int verbose );
 
 /* Internal use */
-void mbedtls_sha512_process( mbedtls_sha512_context *ctx, const unsigned char data[128] );
+void mbedtls_sha512_process( mbedtls_sha512_context *ctx, const unsigned char *data );
 
 #ifdef __cplusplus
 }
diff --git a/deps/mbedtls/sha512.c b/deps/mbedtls/sha512.c
index db0348b8a5..a2f5f0e0cc 100644
--- a/deps/mbedtls/sha512.c
+++ b/deps/mbedtls/sha512.c
@@ -181,7 +181,7 @@ static const uint64_t K[80] =
     UL64(0x5FCB6FAB3AD6FAEC),  UL64(0x6C44198C4A475817)
 };
 
-void mbedtls_sha512_process( mbedtls_sha512_context *ctx, const unsigned char data[128] )
+void mbedtls_sha512_process( mbedtls_sha512_context *ctx, const unsigned char *data )
 {
     int i;
     uint64_t temp1, temp2, W[80];
@@ -309,7 +309,7 @@ static const unsigned char sha512_padding[128] =
 /*
  * SHA-512 final digest
  */
-void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, unsigned char output[64] )
+void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, unsigned char *output )
 {
     size_t last, padn;
     uint64_t high, low;
diff --git a/deps/mbedtls/ssl_tls.c b/deps/mbedtls/ssl_tls.c
index 8a29d97414..7c6f60b1a6 100644
--- a/deps/mbedtls/ssl_tls.c
+++ b/deps/mbedtls/ssl_tls.c
@@ -919,7 +919,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
 }
 
 #if defined(MBEDTLS_SSL_PROTO_SSL3)
-void ssl_calc_verify_ssl( mbedtls_ssl_context *ssl, unsigned char hash[36] )
+void ssl_calc_verify_ssl( mbedtls_ssl_context *ssl, unsigned char *hash )
 {
     mbedtls_md5_context md5;
     mbedtls_sha1_context sha1;
@@ -968,7 +968,7 @@ void ssl_calc_verify_ssl( mbedtls_ssl_context *ssl, unsigned char hash[36] )
 #endif /* MBEDTLS_SSL_PROTO_SSL3 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1)
-void ssl_calc_verify_tls( mbedtls_ssl_context *ssl, unsigned char hash[36] )
+void ssl_calc_verify_tls( mbedtls_ssl_context *ssl, unsigned char *hash )
 {
     mbedtls_md5_context md5;
     mbedtls_sha1_context sha1;
@@ -996,7 +996,7 @@ void ssl_calc_verify_tls( mbedtls_ssl_context *ssl, unsigned char hash[36] )
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
 #if defined(MBEDTLS_SHA256_C)
-void ssl_calc_verify_tls_sha256( mbedtls_ssl_context *ssl, unsigned char hash[32] )
+void ssl_calc_verify_tls_sha256( mbedtls_ssl_context *ssl, unsigned char *hash )
 {
     mbedtls_sha256_context sha256;
 
@@ -1017,7 +1017,7 @@ void ssl_calc_verify_tls_sha256( mbedtls_ssl_context *ssl, unsigned char hash[32
 #endif /* MBEDTLS_SHA256_C */
 
 #if defined(MBEDTLS_SHA512_C)
-void ssl_calc_verify_tls_sha384( mbedtls_ssl_context *ssl, unsigned char hash[48] )
+void ssl_calc_verify_tls_sha384( mbedtls_ssl_context *ssl, unsigned char *hash )
 {
     mbedtls_sha512_context sha512;