diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 21ad18b..0c47c8b 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:0527a86c10b67742c409dc726ba9a31ec4e69b0006e3d7a49b0e6686c59cdaa9
-# created: 2023-05-24T20:32:43.844586914Z
+  digest: sha256:3ad01f4c6671efb094b43f7d3a3e0b9510bd6501f2e65e874dd525373e29de75
+# created: 2023-08-01T22:29:52.50398591Z
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f447b84..bd813c7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [12, 14, 16]
+        node: [12, 14, 16, 18]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
diff --git a/.kokoro/common.cfg b/.kokoro/common.cfg
index 6e8c6e8..b45fa92 100644
--- a/.kokoro/common.cfg
+++ b/.kokoro/common.cfg
@@ -16,7 +16,7 @@ build_file: "nodejs-dns/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:12-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/.kokoro/continuous/node14/common.cfg b/.kokoro/continuous/node14/common.cfg
new file mode 100644
index 0000000..b45fa92
--- /dev/null
+++ b/.kokoro/continuous/node14/common.cfg
@@ -0,0 +1,24 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Build logs will be here
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
+
+# Download trampoline resources.
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
+
+# Use the trampoline script to run in docker.
+build_file: "nodejs-dns/.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"
+}
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/test.sh"
+}
diff --git a/.kokoro/continuous/node14/lint.cfg b/.kokoro/continuous/node14/lint.cfg
new file mode 100644
index 0000000..1394771
--- /dev/null
+++ b/.kokoro/continuous/node14/lint.cfg
@@ -0,0 +1,4 @@
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/lint.sh"
+}
diff --git a/.kokoro/continuous/node14/samples-test.cfg b/.kokoro/continuous/node14/samples-test.cfg
new file mode 100644
index 0000000..d78ef26
--- /dev/null
+++ b/.kokoro/continuous/node14/samples-test.cfg
@@ -0,0 +1,12 @@
+# Download resources for system tests (service account key, etc.)
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-nodejs"
+
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/samples-test.sh"
+}
+
+env_vars: {
+  key: "SECRET_MANAGER_KEYS"
+  value: "long-door-651-kokoro-system-test-service-account"
+}
\ No newline at end of file
diff --git a/.kokoro/continuous/node14/system-test.cfg b/.kokoro/continuous/node14/system-test.cfg
new file mode 100644
index 0000000..de0e854
--- /dev/null
+++ b/.kokoro/continuous/node14/system-test.cfg
@@ -0,0 +1,12 @@
+# Download resources for system tests (service account key, etc.)
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-nodejs"
+
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/system-test.sh"
+}
+
+env_vars: {
+  key: "SECRET_MANAGER_KEYS"
+  value: "long-door-651-kokoro-system-test-service-account"
+}
\ No newline at end of file
diff --git a/.kokoro/continuous/node14/test.cfg b/.kokoro/continuous/node14/test.cfg
new file mode 100644
index 0000000..e69de29
diff --git a/.kokoro/presubmit/node14/common.cfg b/.kokoro/presubmit/node14/common.cfg
new file mode 100644
index 0000000..b45fa92
--- /dev/null
+++ b/.kokoro/presubmit/node14/common.cfg
@@ -0,0 +1,24 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Build logs will be here
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
+
+# Download trampoline resources.
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
+
+# Use the trampoline script to run in docker.
+build_file: "nodejs-dns/.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"
+}
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/test.sh"
+}
diff --git a/.kokoro/presubmit/node14/samples-test.cfg b/.kokoro/presubmit/node14/samples-test.cfg
new file mode 100644
index 0000000..d78ef26
--- /dev/null
+++ b/.kokoro/presubmit/node14/samples-test.cfg
@@ -0,0 +1,12 @@
+# Download resources for system tests (service account key, etc.)
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-nodejs"
+
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/samples-test.sh"
+}
+
+env_vars: {
+  key: "SECRET_MANAGER_KEYS"
+  value: "long-door-651-kokoro-system-test-service-account"
+}
\ No newline at end of file
diff --git a/.kokoro/presubmit/node14/system-test.cfg b/.kokoro/presubmit/node14/system-test.cfg
new file mode 100644
index 0000000..de0e854
--- /dev/null
+++ b/.kokoro/presubmit/node14/system-test.cfg
@@ -0,0 +1,12 @@
+# Download resources for system tests (service account key, etc.)
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-nodejs"
+
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/nodejs-dns/.kokoro/system-test.sh"
+}
+
+env_vars: {
+  key: "SECRET_MANAGER_KEYS"
+  value: "long-door-651-kokoro-system-test-service-account"
+}
\ No newline at end of file
diff --git a/.kokoro/presubmit/node14/test.cfg b/.kokoro/presubmit/node14/test.cfg
new file mode 100644
index 0000000..e69de29
diff --git a/.kokoro/release/docs.cfg b/.kokoro/release/docs.cfg
index 4d26597..2ea3324 100644
--- a/.kokoro/release/docs.cfg
+++ b/.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:12-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
 }
 
 # Download trampoline resources.
diff --git a/.kokoro/release/publish.cfg b/.kokoro/release/publish.cfg
index d0f577e..dc453c6 100644
--- a/.kokoro/release/publish.cfg
+++ b/.kokoro/release/publish.cfg
@@ -30,7 +30,7 @@ build_file: "nodejs-dns/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:12-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
 }
 
 env_vars: {
diff --git a/.kokoro/samples-test.sh b/.kokoro/samples-test.sh
index 806c008..8c5d108 100755
--- a/.kokoro/samples-test.sh
+++ b/.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=12
+COVERAGE_NODE=14
 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/.kokoro/system-test.sh b/.kokoro/system-test.sh
index 0201e9d..0b3043d 100755
--- a/.kokoro/system-test.sh
+++ b/.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=12
+COVERAGE_NODE=14
 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/.kokoro/test.bat b/.kokoro/test.bat
index ae59e59..0bb1240 100644
--- a/.kokoro/test.bat
+++ b/.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 v12.14.1
+call nvm use v14.17.3
 call which node
 
 call npm install || goto :error
diff --git a/.kokoro/test.sh b/.kokoro/test.sh
index a5c7ac0..862d478 100755
--- a/.kokoro/test.sh
+++ b/.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=12
+COVERAGE_NODE=14
 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