diff --git a/common.gypi b/common.gypi
index c8ecf1ffae8a9b..5bc3d8666abc85 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/src/base/platform/memory.h b/deps/v8/src/base/platform/memory.h
index 0a68ee840f7734..b5c675ac238dbd 100644
--- a/deps/v8/src/base/platform/memory.h
+++ b/deps/v8/src/base/platform/memory.h
@@ -23,9 +23,9 @@
 #include <malloc.h>
 #endif  // !V8_OS_DARWIN
 
-#if (V8_OS_POSIX && !V8_OS_AIX) || V8_OS_WIN
+#if (V8_OS_POSIX && !V8_OS_AIX && !V8_OS_SOLARIS) || V8_OS_WIN
 #define V8_HAS_MALLOC_USABLE_SIZE 1
-#endif  // (V8_OS_POSIX && !V8_OS_AIX) || V8_OS_WIN
+#endif  // (V8_OS_POSIX && !V8_OS_AIX && !V8_OS_SOLARIS) || V8_OS_WIN
 
 namespace v8::base {