diff --git a/master/custom/__init__.py b/master/custom/__init__.py
index 21c44e96..c827f5ae 100644
--- a/master/custom/__init__.py
+++ b/master/custom/__init__.py
@@ -1,4 +1,4 @@
-MAIN_BRANCH_VERSION = "3.14"
+MAIN_BRANCH_VERSION = "3.15"
 # The Git branch is called "main", but we give it a different name in buildbot.
 # See git_branches in master/master.cfg.
 MAIN_BRANCH_NAME = "3.x"
diff --git a/master/master.cfg b/master/master.cfg
index 570169c7..b1ced2ba 100644
--- a/master/master.cfg
+++ b/master/master.cfg
@@ -133,6 +133,7 @@ c["workers"] = [w.bb_worker for w in WORKERS]
 git_url = str(settings.git_url)
 git_branches = [
     (git_url, MAIN_BRANCH_NAME, "main"),
+    (git_url, "3.14", "3.14"),
     (git_url, "3.13", "3.13"),
     (git_url, "3.12", "3.12"),
     (git_url, "3.11", "3.11"),