diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8d0dddde..8cc876af 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -15,7 +15,7 @@ Guidelines for bug reports:
 
 1. **Use the GitHub issue search** — check if the issue has already been reported.
 
-2. **Check if the issue has been fixed** — try to reproduce it using the latest `master` branch in the repository.
+2. **Check if the issue has been fixed** — try to reproduce it using the latest `main` branch in the repository.
 
 3. **Isolate the problem** — create a reduced test case or example.