diff --git a/pyproject.toml b/pyproject.toml
index 25ed4df..f8b42fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,7 @@ use = true
 log = "git-log-head"
 log_command = "git log -n 1 --date=iso"
 is_main_var = "GITHUB_REF"
-is_main_match = ".*/trunk$"
+is_main_match = ".*/master$"
 
 [project.entry-points.gather]
 gather = "gather"