diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca63c4a..732ce54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [3.1.2](https://github.com/googleapis/nodejs-cloudbuild/compare/v3.1.1...v3.1.2) (2022-09-22)
+
+
+### Bug Fixes
+
+* Preserve default values in x-goog-request-params header ([#344](https://github.com/googleapis/nodejs-cloudbuild/issues/344)) ([004810d](https://github.com/googleapis/nodejs-cloudbuild/commit/004810d748249c000e8df308b70c03097e65fc25))
+
 ## [3.1.1](https://github.com/googleapis/nodejs-cloudbuild/compare/v3.1.0...v3.1.1) (2022-09-01)
 
 
diff --git a/package.json b/package.json
index 457b80c..cc2662b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "repository": "googleapis/nodejs-cloudbuild",
   "name": "@google-cloud/cloudbuild",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "author": "Google LLC",
   "description": "Cloud Build API client for Node.js",
   "main": "build/src/index.js",
diff --git a/samples/generated/v1/snippet_metadata.google.devtools.cloudbuild.v1.json b/samples/generated/v1/snippet_metadata.google.devtools.cloudbuild.v1.json
index 229605c..ead43ac 100644
--- a/samples/generated/v1/snippet_metadata.google.devtools.cloudbuild.v1.json
+++ b/samples/generated/v1/snippet_metadata.google.devtools.cloudbuild.v1.json
@@ -1,7 +1,7 @@
 {
     "clientLibrary": {
         "name": "nodejs-cloudbuild",
-        "version": "3.1.1",
+        "version": "3.1.2",
         "language": "TYPESCRIPT",
         "apis": [
             {
diff --git a/samples/package.json b/samples/package.json
index 914beef..eff1440 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -15,7 +15,7 @@
     "test": "c8 mocha system-test --timeout=800000"
   },
   "dependencies": {
-    "@google-cloud/cloudbuild": "^3.1.1"
+    "@google-cloud/cloudbuild": "^3.1.2"
   },
   "devDependencies": {
     "c8": "^7.0.0",