diff --git a/Makefile b/Makefile
index cfe52c8..dc346e0 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ DRONES_DIR = $(shell git config "borg.drones-directory" || echo "lib")
 bootstrap-borg:
 	@git submodule--helper clone --name borg --path $(DRONES_DIR)/borg \
 	--url git@github.com:emacscollective/borg.git
-	@cd $(DRONES_DIR)/borg; git symbolic-ref HEAD refs/heads/master
+	@cd $(DRONES_DIR)/borg; git symbolic-ref HEAD refs/heads/main
 	@cd $(DRONES_DIR)/borg; git reset --hard HEAD