diff --git a/testproxy/known_failures.txt b/testproxy/known_failures.txt
index 1ab91160e..a7f1c72ae 100644
--- a/testproxy/known_failures.txt
+++ b/testproxy/known_failures.txt
@@ -15,7 +15,6 @@ TestReadRows_Retry_WithRoutingCookie_MultipleErrorResponses\|
 TestReadRows_Retry_WithRetryInfo\|
 TestReadRows_Retry_WithRetryInfo_MultipleErrorResponse\|
 TestCheckAndMutateRow_Generic_DeadlineExceeded\|
-TestCheckAndMutateRow_Generic_Headers\|
 TestCheckAndMutateRow_NoRetry_TrueMutations\|
 TestCheckAndMutateRow_NoRetry_FalseMutations\|
 TestCheckAndMutateRow_Generic_CloseClient\|