Effective Way to Manage Dependabot Updates
Reduce noise, keep security fast, and group your updates.
1The Noise Problem of Dependabot
When managing an active repository, Dependabot's daily pull requests for single dependencies quickly pile up. In Microsoft's GCToolkit project, 92 out of 578 commits were just Dependabot updates. This creates noise that causes developers to miss important updates. For example, there were 61 Dependabot updates in the last 12 months alone, sometimes multiple in a single day.
2Issues with the Current Configuration
GCToolkit's old configuration had a daily check interval and lacked grouping. This resulted in a separate pull request for each dependency update. 10 updates meant 10 CI runs and 10 review notifications. The open pull request limit wasn't a solution, it just capped the flood.
3Solution: Grouping and Monthly Scheduling
GCToolkit updated its Dependabot configuration with three key changes. All updates were grouped into a single pull request, the check interval was set to monthly, and all ecosystems were covered. This means one pull request per month instead of 10 per day. Grouping uses the '*' wildcard to bundle all dependencies under one roof.
4Benefits of Grouping
Grouping enables a single CI run and review process. If the entire batch is green, one merge is enough. If an issue arises, it's contained in one place. For large projects, test and production dependencies can be kept in separate groups. A February 2026 update allows merging updates for the same dependency across multiple directories into one pull request.
5The Importance of Scheduling
Switching from daily to monthly checks provides a predictable rhythm. Monthly intervals are ideal for mature libraries. Weekly options are also available, and exact days/times can be pinned. This change significantly reduces noise with regular monthly batches.
6Covering All Ecosystems
The original configuration only checked for github-actions updates. But since GCToolkit is a Java project, Maven dependencies weren't being tracked. The new configuration adds separate updates entries for each ecosystem, ensuring the most important dependencies are monitored.
7Security Updates Exception
The biggest concern when slowing update speeds is security patches. However, Dependabot opens security updates immediately by default. Grouping and scheduling only affect version updates. This design reduces noise without compromising security.
8Advanced Grouping for Monorepos
A February 2026 update allows merging updates for the same dependency across multiple directories into one pull request. This is particularly useful for monorepos. For example, a library used in 12 services generates one pull request instead of 12. Directories can be specified with glob patterns like '/apps/*'.
9Implementation Example
GCToolkit's new configuration defines separate monthly batches for github-actions and maven ecosystems. Each has its own schedule and group settings. This ensures Actions and Maven updates arrive as clean, separate batches. Grouping can also be done by dependency-name.
10Results and Impact
These changes significantly reduce time spent on routine maintenance. Developers can work more efficiently without missing critical updates. Since security updates are unaffected, there's no added risk. This method offers an ideal solution for large, mature projects.
Original article: GitHub Engineering — Dependabot Güncellemelerini Yönetmenin Etkili Yolu