diff --git a/conformance/failure_list_php.txt b/conformance/failure_list_php.txt
index 667f80ca37..3232047aa7 100644
--- a/conformance/failure_list_php.txt
+++ b/conformance/failure_list_php.txt
@@ -8,6 +8,8 @@ Recommended.Proto3.JsonInput.FieldMaskInvalidCharacter
 Recommended.Proto3.ProtobufInput.ValidDataOneofBinary.MESSAGE.Merge.ProtobufOutput
 Required.Proto2.JsonInput.StoresDefaultPrimitive.Validator
 Required.Proto3.JsonInput.DoubleFieldTooSmall
+Required.Proto3.JsonInput.DurationNegativeNanos.JsonOutput
+Required.Proto3.JsonInput.DurationNegativeNanos.ProtobufOutput
 Required.Proto3.JsonInput.FloatFieldTooLarge
 Required.Proto3.JsonInput.FloatFieldTooSmall
 Required.Proto3.JsonInput.Int32FieldNotInteger
diff --git a/conformance/failure_list_php_c.txt b/conformance/failure_list_php_c.txt
index 63c7e8a024..52ca4544b6 100644
--- a/conformance/failure_list_php_c.txt
+++ b/conformance/failure_list_php_c.txt
@@ -1,2 +1,5 @@
 Recommended.Proto2.JsonInput.FieldNameExtension.Validator
 Required.Proto2.JsonInput.StoresDefaultPrimitive.Validator
+Required.Proto3.JsonInput.DurationNegativeNanos.JsonOutput
+Required.Proto3.JsonInput.DurationNegativeNanos.ProtobufOutput
+Required.Proto3.JsonInput.DurationNegativeSeconds.JsonOutput
diff --git a/conformance/failure_list_ruby.txt b/conformance/failure_list_ruby.txt
index 4938202ad7..ff230a26a9 100644
--- a/conformance/failure_list_ruby.txt
+++ b/conformance/failure_list_ruby.txt
@@ -56,3 +56,6 @@ Recommended.Proto3.ProtobufInput.ValidDataRepeated.UINT32.PackedInput.UnpackedOu
 Recommended.Proto3.ProtobufInput.ValidDataRepeated.UINT32.UnpackedInput.UnpackedOutput.ProtobufOutput
 Recommended.Proto3.ProtobufInput.ValidDataRepeated.UINT64.PackedInput.UnpackedOutput.ProtobufOutput
 Recommended.Proto3.ProtobufInput.ValidDataRepeated.UINT64.UnpackedInput.UnpackedOutput.ProtobufOutput
+Required.Proto3.JsonInput.DurationNegativeNanos.JsonOutput
+Required.Proto3.JsonInput.DurationNegativeNanos.ProtobufOutput
+Required.Proto3.JsonInput.DurationNegativeSeconds.JsonOutput