diff --git a/common.gypi b/common.gypi
index 8f598c63aee632..960c169a789c5d 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.32',
+    'v8_embedder_string': '-node.33',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/inspector/value-mirror.cc b/deps/v8/src/inspector/value-mirror.cc
index c2fa9b46cc0067..a345a8db38675e 100644
--- a/deps/v8/src/inspector/value-mirror.cc
+++ b/deps/v8/src/inspector/value-mirror.cc
@@ -656,6 +656,18 @@ class SymbolMirror final : public ValueMirror {
                    .build();
   }
 
+  void buildEntryPreview(
+      v8::Local<v8::Context> context, int* nameLimit, int* indexLimit,
+      std::unique_ptr<ObjectPreview>* preview) const override {
+    *preview =
+        ObjectPreview::create()
+            .setType(RemoteObject::TypeEnum::Symbol)
+            .setDescription(descriptionForSymbol(context, m_symbol))
+            .setOverflow(false)
+            .setProperties(std::make_unique<protocol::Array<PropertyPreview>>())
+            .build();
+  }
+
   v8::Local<v8::Value> v8Value() const override { return m_symbol; }
 
   protocol::Response buildWebDriverValue(
diff --git a/deps/v8/test/inspector/debugger/object-preview-internal-properties-expected.txt b/deps/v8/test/inspector/debugger/object-preview-internal-properties-expected.txt
index 56f992237a2ebd..1bdef8231b2523 100644
--- a/deps/v8/test/inspector/debugger/object-preview-internal-properties-expected.txt
+++ b/deps/v8/test/inspector/debugger/object-preview-internal-properties-expected.txt
@@ -159,6 +159,88 @@ expression: new WeakSet([{}])
 ]
 
 
+Running test: symbolsAsKeysInEntries
+expression: new Map([[Symbol('key1'), 1]])
+{
+    name : size
+    type : number
+    value : 1
+}
+[[Entries]]:
+[
+    [0] : {
+        key : {
+            description : Symbol(key1)
+            overflow : false
+            properties : [
+            ]
+            type : symbol
+        }
+        value : {
+            description : 1
+            overflow : false
+            properties : [
+            ]
+            type : number
+        }
+    }
+]
+
+expression: new Set([Symbol('key2')])
+{
+    name : size
+    type : number
+    value : 1
+}
+[[Entries]]:
+[
+    [0] : {
+        value : {
+            description : Symbol(key2)
+            overflow : false
+            properties : [
+            ]
+            type : symbol
+        }
+    }
+]
+
+expression: new WeakMap([[Symbol('key3'), 2]])
+[[Entries]]:
+[
+    [0] : {
+        key : {
+            description : Symbol(key3)
+            overflow : false
+            properties : [
+            ]
+            type : symbol
+        }
+        value : {
+            description : 2
+            overflow : false
+            properties : [
+            ]
+            type : number
+        }
+    }
+]
+
+expression: new WeakSet([Symbol('key4')])
+[[Entries]]:
+[
+    [0] : {
+        value : {
+            description : Symbol(key4)
+            overflow : false
+            properties : [
+            ]
+            type : symbol
+        }
+    }
+]
+
+
 Running test: iteratorObject
 expression: (new Map([[1,2]])).entries()
 [[Entries]]:
diff --git a/deps/v8/test/inspector/debugger/object-preview-internal-properties.js b/deps/v8/test/inspector/debugger/object-preview-internal-properties.js
index f542683aa49159..d2b3a7816339e9 100644
--- a/deps/v8/test/inspector/debugger/object-preview-internal-properties.js
+++ b/deps/v8/test/inspector/debugger/object-preview-internal-properties.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
-// Flags: --harmony-class-fields
+// Flags: --harmony-symbol-as-weakmap-key
 
 let {session, contextGroup, Protocol} = InspectorTest.start("Check internal properties reported in object preview.");
 
@@ -45,6 +45,15 @@ InspectorTest.runTestSuite([
       .then(next);
   },
 
+  function symbolsAsKeysInEntries(next)
+  {
+    checkExpression("new Map([[Symbol('key1'), 1]])")
+      .then(() => checkExpression("new Set([Symbol('key2')])"))
+      .then(() => checkExpression("new WeakMap([[Symbol('key3'), 2]])"))
+      .then(() => checkExpression("new WeakSet([Symbol('key4')])"))
+      .then(next);
+  },
+
   function iteratorObject(next)
   {
     checkExpression("(new Map([[1,2]])).entries()")