diff --git a/deps/v8/include/v8-version.h b/deps/v8/include/v8-version.h
index c7cffaca444941..57fbc629644c09 100644
--- a/deps/v8/include/v8-version.h
+++ b/deps/v8/include/v8-version.h
@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 6
 #define V8_MINOR_VERSION 9
 #define V8_BUILD_NUMBER 427
-#define V8_PATCH_LEVEL 22
+#define V8_PATCH_LEVEL 23
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
diff --git a/deps/v8/src/wasm/wasm-js.cc b/deps/v8/src/wasm/wasm-js.cc
index ef316c64d06d16..7ff27dc769b41b 100644
--- a/deps/v8/src/wasm/wasm-js.cc
+++ b/deps/v8/src/wasm/wasm-js.cc
@@ -729,6 +729,7 @@ void WebAssemblyInstantiate(const v8::FunctionCallbackInfo<v8::Value>& args) {
   if (!i::wasm::IsWasmCodegenAllowed(i_isolate, i_isolate->native_context())) {
     thrower.CompileError("Wasm code generation disallowed by embedder");
     compilation_resolver->OnCompilationFailed(thrower.Reify());
+    return;
   }
 
   // Asynchronous compilation handles copying wire bytes if necessary.
diff --git a/deps/v8/test/mjsunit/wasm/disallow-codegen.js b/deps/v8/test/mjsunit/wasm/disallow-codegen.js
index 9ac2bcd103ec16..f1303e845fe215 100644
--- a/deps/v8/test/mjsunit/wasm/disallow-codegen.js
+++ b/deps/v8/test/mjsunit/wasm/disallow-codegen.js
@@ -65,6 +65,16 @@ async function AsyncTestOk() {
     promise, module => assertInstanceof(module, WebAssembly.Module));
 }
 
+async function AsyncTestWithInstantiateOk() {
+  print('async module instantiate (ok)...');
+  %DisallowCodegenFromStrings(false);
+  %DisallowWasmCodegen(false);
+  let promise = WebAssembly.instantiate(buffer);
+  assertPromiseResult(
+      promise,
+      module => assertInstanceof(module.instance, WebAssembly.Instance));
+}
+
 async function AsyncTestFail() {
   print('async module compile (fail)...');
   %DisallowCodegenFromStrings(true);
@@ -78,6 +88,19 @@ async function AsyncTestFail() {
   }
 }
 
+async function AsyncTestWithInstantiateFail() {
+  print('async module instantiate (fail)...');
+  %DisallowCodegenFromStrings(true);
+  %DisallowWasmCodegen(false);
+  try {
+    let m = await WebAssembly.instantiate(buffer);
+    assertUnreachable();
+  } catch (e) {
+    print("  " + e);
+    assertInstanceof(e, WebAssembly.CompileError);
+  }
+}
+
 async function AsyncTestWasmFail(disallow_codegen) {
   print('async wasm module compile (fail)...');
   %DisallowCodegenFromStrings(disallow_codegen);
@@ -91,6 +114,19 @@ async function AsyncTestWasmFail(disallow_codegen) {
   }
 }
 
+async function AsyncTestWasmWithInstantiateFail(disallow_codegen) {
+  print('async wasm module instantiate (fail)...');
+  %DisallowCodegenFromStrings(disallow_codegen);
+  %DisallowWasmCodegen(true);
+  try {
+    let m = await WebAssembly.instantiate(buffer);
+    assertUnreachable();
+  } catch (e) {
+    print("  " + e);
+    assertInstanceof(e, WebAssembly.CompileError);
+  }
+}
+
 async function StreamingTestOk() {
   print('streaming module compile (ok)...');
   // TODO(titzer): compileStreaming must be supplied by embedder.
@@ -149,7 +185,9 @@ async function RunAll() {
   await SyncTestOk();
   await SyncTestFail();
   await AsyncTestOk();
+  await AsyncTestWithInstantiateOk();
   await AsyncTestFail();
+  await AsyncTestWithInstantiateFail();
   await StreamingTestOk();
   await StreamingTestFail();
 
@@ -157,6 +195,7 @@ async function RunAll() {
   for (count = 0; count < 2; ++count) {
     SyncTestWasmFail(disallow_codegen);
     AsyncTestWasmFail(disallow_codegen);
+    AsyncTestWasmWithInstantiateFail(disallow_codegen);
     StreamingTestWasmFail(disallow_codegen)
     disallow_codegen = true;
   }