diff --git a/.ci/README.md b/.ci/README.md
index 689e5351..699dbe62 100644
--- a/.ci/README.md
+++ b/.ci/README.md
@@ -14,7 +14,7 @@ include .ci/podman.mk
 
 Add subtree to your project:
 ```
-git subtree add --prefix .ci https://git.zero-downtime.net/ZeroDownTime/ci-tools-lib.git master --squash
+git subtree add --prefix .ci https://git.zero-downtime.net/ZeroDownTime/ci-tools-lib.git main --squash
 ```
 
 
diff --git a/.ci/podman.mk b/.ci/podman.mk
index 94901104..ed5aa268 100644
--- a/.ci/podman.mk
+++ b/.ci/podman.mk
@@ -85,7 +85,7 @@ rm-image:
 
 ## some useful tasks during development
 ci-pull-upstream: ## pull latest shared .ci subtree
-	git subtree pull --prefix .ci ssh://git@git.zero-downtime.net/ZeroDownTime/ci-tools-lib.git master --squash -m "Merge latest ci-tools-lib"
+	git subtree pull --prefix .ci ssh://git@git.zero-downtime.net/ZeroDownTime/ci-tools-lib.git main --squash -m "Merge latest ci-tools-lib"
 
 create-repo: ## create new AWS ECR public repository
 	aws ecr-public create-repository --repository-name $(IMAGE) --region $(REGION)