diff --git a/tools/run_tests/sanity/sanity_tests.yaml b/tools/run_tests/sanity/sanity_tests.yaml
index ec58a10a853..3ca5c1b6c09 100644
--- a/tools/run_tests/sanity/sanity_tests.yaml
+++ b/tools/run_tests/sanity/sanity_tests.yaml
@@ -17,5 +17,5 @@
 - script: tools/distrib/pylint_code.sh
 - script: tools/distrib/yapf_code.sh
 - script: tools/distrib/python/check_grpcio_tools.py
-- script: tools/run_tests/sanity/check_clang_tidy.sh -j 3
-  cpu_cost: 3
+- script: tools/run_tests/sanity/check_clang_tidy.sh
+  cpu_cost: 1000