diff --git a/synthtool/gcp/templates/node_library/.github/workflows/ci.yaml b/synthtool/gcp/templates/node_library/.github/workflows/ci.yaml
index b01e5ebc9..f8d2653a8 100644
--- a/synthtool/gcp/templates/node_library/.github/workflows/ci.yaml
+++ b/synthtool/gcp/templates/node_library/.github/workflows/ci.yaml
@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [{{metadata['engine'] | int}}, {{metadata['engine'] | int+2}}, {{metadata['engine'] | int+4}}, {{metadata['engine'] | int+6}}]
+        node: [{{metadata['engine'] | int}}, {{metadata['engine'] | int+2}}, {{metadata['engine'] | int+4}}}]
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ '{{' }} matrix.node {{ '}}' }}
       - run: node --version
@@ -29,10 +29,10 @@ jobs:
   windows:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 18
       - run: npm install --engine-strict
       - run: npm test
         env:
@@ -40,19 +40,19 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 18
       - run: npm install
       - run: npm run lint
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 18
       - run: npm install
       - run: npm run docs
       - uses: JustinBeckwith/linkinator-action@v1
diff --git a/synthtool/gcp/templates/node_library/.kokoro/common.cfg b/synthtool/gcp/templates/node_library/.kokoro/common.cfg
index 09a843131..56289589e 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/common.cfg
+++ b/synthtool/gcp/templates/node_library/.kokoro/common.cfg
@@ -16,7 +16,7 @@ build_file: "{{ metadata['repository_name'] }}/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/synthtool/gcp/templates/node_library/.kokoro/continuous/node14/common.cfg b/synthtool/gcp/templates/node_library/.kokoro/continuous/node18/common.cfg
similarity index 90%
rename from synthtool/gcp/templates/node_library/.kokoro/continuous/node14/common.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/continuous/node18/common.cfg
index 09a843131..56289589e 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/continuous/node14/common.cfg
+++ b/synthtool/gcp/templates/node_library/.kokoro/continuous/node18/common.cfg
@@ -16,7 +16,7 @@ build_file: "{{ metadata['repository_name'] }}/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/synthtool/gcp/templates/node_library/.kokoro/continuous/node14/lint.cfg b/synthtool/gcp/templates/node_library/.kokoro/continuous/node18/lint.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/continuous/node14/lint.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/continuous/node18/lint.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/continuous/node14/samples-test.cfg b/synthtool/gcp/templates/node_library/.kokoro/continuous/node18/samples-test.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/continuous/node14/samples-test.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/continuous/node18/samples-test.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/continuous/node14/system-test.cfg b/synthtool/gcp/templates/node_library/.kokoro/continuous/node18/system-test.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/continuous/node14/system-test.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/continuous/node18/system-test.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/continuous/node14/test.cfg b/synthtool/gcp/templates/node_library/.kokoro/continuous/node18/test.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/continuous/node14/test.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/continuous/node18/test.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/common.cfg b/synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/common.cfg
similarity index 90%
rename from synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/common.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/common.cfg
index 09a843131..56289589e 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/common.cfg
+++ b/synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/common.cfg
@@ -16,7 +16,7 @@ build_file: "{{ metadata['repository_name'] }}/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/samples-test.cfg b/synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/samples-test.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/samples-test.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/samples-test.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/system-test.cfg b/synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/system-test.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/system-test.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/system-test.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/test.cfg b/synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/test.cfg
similarity index 100%
rename from synthtool/gcp/templates/node_library/.kokoro/presubmit/node14/test.cfg
rename to synthtool/gcp/templates/node_library/.kokoro/presubmit/node18/test.cfg
diff --git a/synthtool/gcp/templates/node_library/.kokoro/release/docs-devsite.cfg b/synthtool/gcp/templates/node_library/.kokoro/release/docs-devsite.cfg
index b12be83de..3655aa469 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/release/docs-devsite.cfg
+++ b/synthtool/gcp/templates/node_library/.kokoro/release/docs-devsite.cfg
@@ -11,7 +11,7 @@ before_action {
 # doc publications use a Python image.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 
 # Download trampoline resources.
diff --git a/synthtool/gcp/templates/node_library/.kokoro/release/docs.cfg b/synthtool/gcp/templates/node_library/.kokoro/release/docs.cfg
index 06d314b3f..cc24910f4 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/release/docs.cfg
+++ b/synthtool/gcp/templates/node_library/.kokoro/release/docs.cfg
@@ -11,7 +11,7 @@ before_action {
 # doc publications use a Python image.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 
 # Download trampoline resources.
diff --git a/synthtool/gcp/templates/node_library/.kokoro/release/docs.sh b/synthtool/gcp/templates/node_library/.kokoro/release/docs.sh
index 1d8f3f490..e9079a605 100755
--- a/synthtool/gcp/templates/node_library/.kokoro/release/docs.sh
+++ b/synthtool/gcp/templates/node_library/.kokoro/release/docs.sh
@@ -16,7 +16,7 @@
 
 set -eo pipefail
 
-# build jsdocs (Python is installed on the Node 10 docker image).
+# build jsdocs (Python is installed on the Node 18 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/synthtool/gcp/templates/node_library/.kokoro/release/publish.cfg b/synthtool/gcp/templates/node_library/.kokoro/release/publish.cfg
index dd463aca2..f0593cea6 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/release/publish.cfg
+++ b/synthtool/gcp/templates/node_library/.kokoro/release/publish.cfg
@@ -30,7 +30,7 @@ build_file: "{{ metadata['repository_name'] }}/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 
 env_vars: {
diff --git a/synthtool/gcp/templates/node_library/.kokoro/samples-test.sh b/synthtool/gcp/templates/node_library/.kokoro/samples-test.sh
index ad84c00ce..59098966f 100755
--- a/synthtool/gcp/templates/node_library/.kokoro/samples-test.sh
+++ b/synthtool/gcp/templates/node_library/.kokoro/samples-test.sh
@@ -56,7 +56,7 @@ fi
 
 # codecov combines coverage across integration and unit tests. Include
 # the logic below for any environment you wish to collect coverage for:
-COVERAGE_NODE=14
+COVERAGE_NODE=18
 if npx check-node-version@3.3.0 --silent --node $COVERAGE_NODE; then
   NYC_BIN=./node_modules/nyc/bin/nyc.js
   if [ -f "$NYC_BIN" ]; then
diff --git a/synthtool/gcp/templates/node_library/.kokoro/system-test.sh b/synthtool/gcp/templates/node_library/.kokoro/system-test.sh
index a63f8837c..48a976869 100755
--- a/synthtool/gcp/templates/node_library/.kokoro/system-test.sh
+++ b/synthtool/gcp/templates/node_library/.kokoro/system-test.sh
@@ -49,7 +49,7 @@ npm run system-test
 
 # codecov combines coverage across integration and unit tests. Include
 # the logic below for any environment you wish to collect coverage for:
-COVERAGE_NODE=14
+COVERAGE_NODE=18
 if npx check-node-version@3.3.0 --silent --node $COVERAGE_NODE; then
   NYC_BIN=./node_modules/nyc/bin/nyc.js
   if [ -f "$NYC_BIN" ]; then
diff --git a/synthtool/gcp/templates/node_library/.kokoro/test.bat b/synthtool/gcp/templates/node_library/.kokoro/test.bat
index 0bb124052..caf825656 100644
--- a/synthtool/gcp/templates/node_library/.kokoro/test.bat
+++ b/synthtool/gcp/templates/node_library/.kokoro/test.bat
@@ -21,7 +21,7 @@ cd ..
 @rem we upgrade Node.js in the image:
 SET PATH=%PATH%;/cygdrive/c/Program Files/nodejs/npm
 
-call nvm use v14.17.3
+call nvm use 18
 call which node
 
 call npm install || goto :error
diff --git a/synthtool/gcp/templates/node_library/.kokoro/test.sh b/synthtool/gcp/templates/node_library/.kokoro/test.sh
index 862d478d3..0d9f6392a 100755
--- a/synthtool/gcp/templates/node_library/.kokoro/test.sh
+++ b/synthtool/gcp/templates/node_library/.kokoro/test.sh
@@ -39,7 +39,7 @@ npm test
 
 # codecov combines coverage across integration and unit tests. Include
 # the logic below for any environment you wish to collect coverage for:
-COVERAGE_NODE=14
+COVERAGE_NODE=18
 if npx check-node-version@3.3.0 --silent --node $COVERAGE_NODE; then
   NYC_BIN=./node_modules/nyc/bin/nyc.js
   if [ -f "$NYC_BIN" ]; then
diff --git a/synthtool/gcp/templates/node_library/.kokoro/trampoline_v2.sh b/synthtool/gcp/templates/node_library/.kokoro/trampoline_v2.sh
index 4d0311212..5d6cfcca5 100755
--- a/synthtool/gcp/templates/node_library/.kokoro/trampoline_v2.sh
+++ b/synthtool/gcp/templates/node_library/.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:10-user \
+#   TRAMPOLINE_IMAGE=gcr.io/cloud-devrel-kokoro-resources/node:18-user \
 #     TRAMPOLINE_BUILD_FILE=.kokoro/system-test.sh \
 #     .kokoro/trampoline_v2.sh