diff --git a/common.gypi b/common.gypi
index 2a849923d3b936..aa4279d93ca35c 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.62',
+    'v8_embedder_string': '-node.63',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/compiler/type-cache.h b/deps/v8/src/compiler/type-cache.h
index b71ea8455d544d..54e725c64f7e35 100644
--- a/deps/v8/src/compiler/type-cache.h
+++ b/deps/v8/src/compiler/type-cache.h
@@ -80,7 +80,7 @@ class V8_EXPORT_PRIVATE TypeCache final {
       Type::Union(kPositiveIntegerOrMinusZero, Type::NaN(), zone());
 
   Type const kAdditiveSafeInteger =
-      CreateRange(-4503599627370496.0, 4503599627370496.0);
+      CreateRange(-4503599627370495.0, 4503599627370495.0);
   Type const kSafeInteger = CreateRange(-kMaxSafeInteger, kMaxSafeInteger);
   Type const kAdditiveSafeIntegerOrMinusZero =
       Type::Union(kAdditiveSafeInteger, Type::MinusZero(), zone());