diff --git a/smithy-aws-protocol-tests/model/restJson1/defaults.smithy b/smithy-aws-protocol-tests/model/restJson1/defaults.smithy
index f1436329350..2ceb1d20cc2 100644
--- a/smithy-aws-protocol-tests/model/restJson1/defaults.smithy
+++ b/smithy-aws-protocol-tests/model/restJson1/defaults.smithy
@@ -323,7 +323,7 @@ apply OperationWithDefaults @httpResponseTests([
             defaultDocumentBoolean: false
             defaultDocumentList: ["b"]
             defaultNullDocument: "notNull"
-            defaultTimestamp: 1
+            defaultTimestamp: 2
             defaultBlob: "hi"
             defaultByte: 2
             defaultShort: 2
@@ -457,4 +457,4 @@ enum TestEnum {
 intEnum TestIntEnum {
     ONE = 1
     TWO = 2
-}
\ No newline at end of file
+}