diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 8af3097e..934f89f6 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -21,7 +21,7 @@ on:
   workflow_dispatch:
   pull_request:
     branches:
-      - master
+      - main
 
 concurrency:
   group: '${{ github.workflow }}-${{ github.head_ref || github.ref }}'
diff --git a/Makefile b/Makefile
index 48d93205..f315bc4f 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@
 # Make will use bash instead of sh
 SHELL := /usr/bin/env bash
 
-DOCKER_TAG_VERSION_DEVELOPER_TOOLS := 1.19
+DOCKER_TAG_VERSION_DEVELOPER_TOOLS := 1.20
 DOCKER_IMAGE_DEVELOPER_TOOLS := cft/developer-tools
 REGISTRY_URL := gcr.io/cloud-foundation-cicd
 
diff --git a/examples/.gitkeep b/examples/.gitkeep
new file mode 100644
index 00000000..e69de29b