diff --git a/DEPS b/DEPS
index 8fe57add6e9..44fe44ebaea 100644
--- a/DEPS
+++ b/DEPS
@@ -25,8 +25,8 @@ vars = {
 
   # Note: When updating the Dart revision, ensure that all entries that are
   # dependencies of dart are also updated
-  'dart_revision': 'cab003366785773ace16b5305ac1f33c228cac54',
-  'dart_observatory_packages_revision': 'cdc4b3d4c15b9c0c8e7702dff127b440afbb7485',
+  'dart_revision': '4b4e836960dfc75f174084ec9233b4516569a38f',
+  'dart_observatory_packages_revision': 'a731d3b1caf27b45aecdce9378b87a510240264d',
   'dart_root_certificates_revision': 'c3a41df63afacec62fcb8135196177e35fe72f71',
 
   'buildtools_revision': '5215ee866bc3e8eb4a7f124212845abf4029e60b',
diff --git a/engine/src/flutter/sky/tools/sky_snapshot/vm.cc b/engine/src/flutter/sky/tools/sky_snapshot/vm.cc
index 7fc57deeda0..cf3e2aff0ec 100644
--- a/engine/src/flutter/sky/tools/sky_snapshot/vm.cc
+++ b/engine/src/flutter/sky/tools/sky_snapshot/vm.cc
@@ -21,7 +21,7 @@ void InitDartVM() {
   CHECK(Dart_SetVMFlags(arraysize(kDartArgs), kDartArgs));
   CHECK(Dart_Initialize(blink::kDartVmIsolateSnapshotBuffer, nullptr, nullptr,
                         nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-                        nullptr));
+                        nullptr, nullptr) == nullptr);
 }
 
 Dart_Isolate CreateDartIsolate() {