diff --git a/common.gypi b/common.gypi
index 62bc097f8c4f06..071cda582f2ea4 100644
--- a/common.gypi
+++ b/common.gypi
@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.5',
+    'v8_embedder_string': '-node.6',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/third_party/zlib/chromeconf.h b/deps/v8/third_party/zlib/chromeconf.h
index 5b91c86442105a..c324e3259ac3f3 100644
--- a/deps/v8/third_party/zlib/chromeconf.h
+++ b/deps/v8/third_party/zlib/chromeconf.h
@@ -199,5 +199,6 @@
 /* Symbols added by cpu_features.c */
 #define cpu_check_features Cr_z_cpu_check_features
 #define x86_cpu_enable_sse2 Cr_z_x86_cpu_enable_sse2
+#define x86_cpu_enable_avx512 Cr_z_x86_cpu_enable_avx512
 
 #endif /* THIRD_PARTY_ZLIB_CHROMECONF_H_ */