diff --git a/docker-compose.yml b/docker-compose.yml
index 4b671d7..52b0ab1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -25,6 +25,7 @@ services:
       - DRONE_RPC_SECRET=${DRONE_RPC_SECRET}
       - DRONE_USER_CREATE=username:giles,admin:true
       - DRONE_AGENTS_ENABLED=true
+      - DRONE_JSONNET_ENABLED=true
       - DRONE_CONVERT_PLUGIN_ENDPOINT=http://drone-starlark:3000
       - DRONE_CONVERT_PLUGIN_SECRET=${DRONE_CONVERT_SECRET}
     networks: