diff --git a/mojoapptests b/mojoapptests
index 294af61..362ef84 100644
--- a/mojoapptests
+++ b/mojoapptests
@@ -8,10 +8,13 @@
     "shell-args": ["--args-for=https://mojo.v.io/discovery.mojo --use-mock"],
     "timeout": 120,
   },
-  {
-    "test": "https://dart.test.mojo.v.io/discovery_apptests.dart",
-    "type": "dart",
-    "dart_strict_mode": True,
-    "shell-args": ["--args-for=https://mojo.v.io/discovery.mojo --use-mock"],
-  }
+  # Disable dart apptests due to flakiness.
+  # See https://github.com/vanadium/issues/issues/1278
+  #
+  # {
+  #   "test": "https://dart.test.mojo.v.io/discovery_apptests.dart",
+  #   "type": "dart",
+  #   "dart_strict_mode": True,
+  #   "shell-args": ["--args-for=https://mojo.v.io/discovery.mojo --use-mock"],
+  # }
 ]