diff --git a/test/core/util/ubsan_suppressions.txt b/test/core/util/ubsan_suppressions.txt
index 1119f0c7708..63898ea3b1c 100644
--- a/test/core/util/ubsan_suppressions.txt
+++ b/test/core/util/ubsan_suppressions.txt
@@ -26,4 +26,6 @@ alignment:absl::little_endian::Load64
 float-divide-by-zero:grpc::testing::postprocess_scenario_result
 enum:grpc_op_string
 nonnull-attribute:grpc_lb_addresses_copy
-signed-integer-overflow:chrono
\ No newline at end of file
+signed-integer-overflow:chrono
+enum:grpc_http2_error_to_grpc_status
+enum:grpc_chttp2_cancel_stream
\ No newline at end of file