diff --git a/.github/sync-repo-settings.yaml b/.github/sync-repo-settings.yaml
index 1b362683..d1e8b5e6 100644
--- a/.github/sync-repo-settings.yaml
+++ b/.github/sync-repo-settings.yaml
@@ -9,9 +9,9 @@ branchProtectionRules:
       - "ci/kokoro: System test"
       - docs
       - lint
-      - test (10)
       - test (12)
       - test (14)
+      - test (16)
       - cla/google
       - windows
       - OwlBot Post Processor
diff --git a/.kokoro/release/docs.sh b/.kokoro/release/docs.sh
index 14fabc0f..4c866c86 100755
--- a/.kokoro/release/docs.sh
+++ b/.kokoro/release/docs.sh
@@ -16,7 +16,7 @@
 
 set -eo pipefail
 
-# build jsdocs (Python is installed on the Node 12 docker image).
+# build jsdocs (Python is installed on the Node 10 docker image).
 if [[ -z "$CREDENTIALS" ]]; then
   # if CREDENTIALS are explicitly set, assume we're testing locally
   # and don't set NPM_CONFIG_PREFIX.
diff --git a/.kokoro/trampoline_v2.sh b/.kokoro/trampoline_v2.sh
index 5c3d9012..4d031121 100755
--- a/.kokoro/trampoline_v2.sh
+++ b/.kokoro/trampoline_v2.sh
@@ -44,7 +44,7 @@
 # the project root.
 #
 # Here is an example for running this script.
-#   TRAMPOLINE_IMAGE=gcr.io/cloud-devrel-kokoro-resources/node:12-user \
+#   TRAMPOLINE_IMAGE=gcr.io/cloud-devrel-kokoro-resources/node:10-user \
 #     TRAMPOLINE_BUILD_FILE=.kokoro/system-test.sh \
 #     .kokoro/trampoline_v2.sh