diff --git a/webgpu-cts/expectations.txt b/webgpu-cts/expectations.txt
index 96827f5..208a5e0 100644
--- a/webgpu-cts/expectations.txt
+++ b/webgpu-cts/expectations.txt
@@ -563,6 +563,9 @@
 crbug.com/dawn/2478 [ android android-pixel-6 ] webgpu:api,validation,buffer,mapping:getMappedRange,state,mappingPending: [ Failure ]
 crbug.com/dawn/2478 [ android android-pixel-6 ] webgpu:api,validation,buffer,mapping:mapAsync,earlyRejection: [ Failure ]
 crbug.com/dawn/2478 [ android android-pixel-6 ] webgpu:api,validation,buffer,mapping:mapAsync,state,mappingPending: [ Failure ]
+crbug.com/dawn/2478 [ android android-pixel-6 webgpu-dedicated-worker ] webgpu:api,validation,buffer,mapping:unmap,state,mappingPending: [ Failure ]
+crbug.com/dawn/2478 [ android android-pixel-6 webgpu-service-worker ] webgpu:api,validation,buffer,mapping:unmap,state,mappingPending: [ Failure ]
+crbug.com/dawn/2478 [ android android-pixel-6 webgpu-shared-worker ] webgpu:api,validation,buffer,mapping:unmap,state,mappingPending: [ Failure ]
 crbug.com/dawn/2479 [ linux nvidia webgpu-dedicated-worker ] webgpu:api,operation,onSubmittedWorkDone:many,serial: [ RetryOnFailure ]
 crbug.com/dawn/2479 [ linux nvidia webgpu-dedicated-worker ] webgpu:api,operation,onSubmittedWorkDone:with_work: [ RetryOnFailure ]
 crbug.com/dawn/2479 [ linux nvidia webgpu-dedicated-worker ] webgpu:api,operation,onSubmittedWorkDone:without_work: [ RetryOnFailure ]