diff --git a/promtail/build.json b/promtail/build.json
deleted file mode 100644
index 43cbe8a..0000000
--- a/promtail/build.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "build_from": {
-    "aarch64": "arm64v8/debian",
-    "amd64": "amd64/debian",
-    "armhf": "arm32v5/debian",
-    "armv7": "arm32v7/debian"
-  }
-}
diff --git a/promtail/build.yaml b/promtail/build.yaml
new file mode 100644
index 0000000..1441ab2
--- /dev/null
+++ b/promtail/build.yaml
@@ -0,0 +1,6 @@
+---
+build_from:
+  aarch64: arm64v8/debian
+  amd64: amd64/debian
+  armhf: arm32v5/debian
+  armv7: arm32v7/debian
diff --git a/promtail/config.json b/promtail/config.json
deleted file mode 100644
index 73cb7ab..0000000
--- a/promtail/config.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "name": "Promtail (Journal)",
-  "version": "dev",
-  "slug": "promtail-journal",
-  "description": "Basic debian image with promtail binary built with journal support",
-  "url": "https://github.com/mdegat01/promtail-journal",
-  "arch": ["aarch64", "amd64", "armhf", "armv7"]
-}
diff --git a/promtail/config.yaml b/promtail/config.yaml
new file mode 100644
index 0000000..606a46a
--- /dev/null
+++ b/promtail/config.yaml
@@ -0,0 +1,11 @@
+---
+name: Promtail (Journal)
+version: dev
+slug: promtail-journal
+description: Basic debian image with promtail binary built with journal support
+url: https://github.com/mdegat01/promtail-journal
+arch:
+  - aarch64
+  - amd64
+  - armhf
+  - armv7