Tweak cpu costs
diff --git a/build.yaml b/build.yaml
index 7229f2c..08c8c65 100644
--- a/build.yaml
+++ b/build.yaml
@@ -1121,7 +1121,7 @@
   - gpr_test_util
   - gpr
 - name: gpr_stack_lockfree_test
-  cpu_cost: 2
+  cpu_cost: 10
   build: test
   language: c
   src: