diff --git a/.bazelci/postsubmit.yml b/.bazelci/postsubmit.yml
index dbfdf15f0ebcb0..e4d5e07eadbfef 100644
--- a/.bazelci/postsubmit.yml
+++ b/.bazelci/postsubmit.yml
@@ -195,6 +195,8 @@ tasks:
       - "--test_env=TEST_REPOSITORY_HOME=$HOME/bazeltest/external"
       # Configure and enable tests that require access to the network.
       - "--test_env=REMOTE_NETWORK_ADDRESS=bazel.build:80"
+      # Fine tune the number of test jobs running in parallel to avoid timeout
+      - "--local_test_jobs=8"
     test_targets:
       - "//scripts/..."
       - "//src/test/..."
diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index 8a30661c0cec6d..b45ef7fd8962fe 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml
@@ -199,6 +199,8 @@ tasks:
       - "--test_env=TEST_REPOSITORY_HOME=$HOME/bazeltest/external"
       # Configure and enable tests that require access to the network.
       - "--test_env=REMOTE_NETWORK_ADDRESS=bazel.build:80"
+      # Fine tune the number of test jobs running in parallel to avoid timeout
+      - "--local_test_jobs=8"
     test_targets:
       - "//scripts/..."
       - "//src/main/starlark/tests/builtins_bzl/..."