Google Ads API v20 Sunset: How to Upgrade Before June 10

Why the Google Ads API v20 Sunset Matters

On June 10, Google will retire version 20 of its Ads API. The change is not just another technical footnote—it directly impacts every advertiser who relies on automated campaign management, reporting, or third‑party tools. If your scripts, dashboards, or integrations still call v20, they will stop working the moment the sunset takes effect. That means missed data, stalled ad delivery, and potentially lost revenue.

Google gives developers a clear upgrade path, but the window is short. Understanding the timeline, the steps to migrate, and the common pitfalls can save you hours of emergency troubleshooting.

Key Dates and What Happens on June 10

Google follows a predictable deprecation schedule for each API version. For v20 the critical milestones are:

• April 1: Google stops accepting new developer tokens for v20.
• May 1: All non‑critical bugs are frozen; only security fixes will be issued.
• June 10: v20 endpoints return a 410 Gone response, effectively breaking any call that still targets the old version.

After June 10, only v22 and newer will be supported for production traffic. If your systems still reference v20 after that date, they will receive error messages and stop processing data.

Step‑by‑Step Upgrade Checklist

Below is a practical guide you can follow tomorrow. Each step includes a short description and a bullet list of actions to take.

1. Audit All API Calls

Identify every place where your code, scripts, or third‑party platforms contact the Google Ads API.

• Search your code repositories for the string v20 or googleads.googleapis.com/v20.
• Check your Marketing Platform integrations (e.g., HubSpot, Data Studio) for version settings.
• Review any scheduled Cloud Functions, Lambda scripts, or ETL pipelines.

2. Choose the Target Version

Google currently recommends v22 for most advertisers because it includes the latest features and the longest support window.

• If you need a specific feature only available in v23, plan to adopt that version instead.
• Make sure your OAuth scopes and client libraries are compatible with the chosen version.

3. Update Client Libraries

Google provides official libraries for Java, Python, .NET, PHP, Ruby, and Go. Install the latest release before making code changes.

• Python: pip install --upgrade google-ads
• Java: Update your Maven pom.xml to the newest google-ads artifact.
• .NET: Use NuGet to get the latest package.

4. Refactor Code to New Endpoints

Replace hard‑coded version strings with a variable or configuration value. This practice makes future upgrades easier.

// Before
client = GoogleAdsClient.LoadFromStorage("google-ads.yaml");
// After – using a config file
client = GoogleAdsClient.LoadFromStorage(config["google_ads_config"]);

Test each changed endpoint in a sandbox environment first. Google offers a test account that mirrors production behavior without spending money.

5. Verify Permissions and Quotas

New API versions may have different quota limits. Review the quota documentation and adjust your usage patterns if needed.

• Check daily request limits for each client ID.
• Ensure service accounts have the Google Ads API role with appropriate scopes.

6. Run End‑to‑End Tests

Before the June 10 deadline, schedule a full regression run:

• Execute a script that pulls a report, creates a test campaign, and then pauses it.
• Confirm that no 410 responses appear in logs.
• Validate that data in your reporting dashboard matches expected results.

7. Deploy and Monitor

Push the updated code to production during a low‑traffic window. Keep an eye on error logs for at least 48 hours after deployment.

• Set up alerts for HTTP 4xx/5xx responses from the API.
• Schedule a follow‑up audit one week later to confirm stability.

Common Pitfalls and How to Avoid Them

Even experienced developers can stumble during an API migration. Here are the most frequent issues and quick fixes.

Hard‑Coded Version Numbers

Hard‑coding v20 makes future upgrades painful. Replace static strings with a configuration variable stored in a central JSON or YAML file.

Missing New Required Fields

Newer API versions sometimes add mandatory fields to objects such as AdGroupAd. Review the release notes for “required fields added” and update your payloads accordingly.

Quota Miscalculations

Switching to a newer version can reset your quota counters. If you hit a quota error shortly after deployment, request a higher limit through the Google Cloud Console.

Third‑Party Tool Compatibility

Some SaaS platforms still default to v20. Contact support and ask them to switch to v22 or provide an API version override.

Actionable Insights for Ongoing API Management

Upgrade once, forget forever—sounds great, but Google releases a new version roughly every six months. Adopt these habits to stay ahead.

• Version‑agnostic code: Store the API version in an environment variable and read it at runtime.
• Automated health checks: Run a daily script that makes a lightweight API call and logs the response code.
• Subscribe to release notes: Google posts version changes on the developer blog; a simple RSS feed keeps you informed.
• Document each upgrade: Keep a changelog in your repo that notes which endpoints changed and why.

Conclusion: Upgrade Today, Avoid Disruption Tomorrow

The June 10 sunset of Google Ads API v20 is a hard deadline you can’t ignore. By auditing your calls, updating to the latest client libraries, and testing in a sandbox, you’ll ensure a seamless transition to v22 or newer. Take the checklist above, assign tasks to your team, and set a firm internal deadline at least two weeks before the official cutoff.

Need a hand with the migration? Our certified PPC engineers specialize in Google Ads API upgrades and can fast‑track the process for you. Contact us today to schedule a free assessment.