diff --git a/tensorflow/lite/build_def.bzl b/tensorflow/lite/build_def.bzl
index f6cdb981328..fd51ad0a4aa 100644
--- a/tensorflow/lite/build_def.bzl
+++ b/tensorflow/lite/build_def.bzl
@@ -680,6 +680,9 @@ def gen_model_coverage_test(src, model_name, data, failure_type, tags, size = "m
         if failure_type[i] != "none":
             args.append("--failure_type=%s" % failure_type[i])
         i = i + 1
+
+        # Avoid coverage timeouts for large/enormous tests.
+        coverage_tags = ["nozapfhahn"] if size in ["large", "enormous"] else []
         native.py_test(
             name = "model_coverage_test_%s_%s" % (model_name, target_op_sets.lower().replace(",", "_")),
             srcs = [src],
@@ -696,7 +699,7 @@ def gen_model_coverage_test(src, model_name, data, failure_type, tags, size = "m
                 "no_gpu",  # Executing with TF GPU configurations is redundant.
                 "no_oss",
                 "no_windows",
-            ] + tags,
+            ] + tags + coverage_tags,
             deps = [
                 "//tensorflow/lite/testing/model_coverage:model_coverage_lib",
                 "//tensorflow/lite/python:lite",