diff --git a/.gitignore b/.gitignore
index ec43534..1ba9ab6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,6 @@ Vagrantfile
 .idea
 .vscode/*
 appveyor.yml
+
+vendor/
+composer.lock
diff --git a/composer.json b/composer.json
index da73f69..52bdade 100644
--- a/composer.json
+++ b/composer.json
@@ -9,12 +9,16 @@
             "email": "bob@twokings.nl"
         }
     ],
-    "require": {},
+    "require": {
+        "bolt/core": "^4.0.0"
+    },
     "autoload": {
         "psr-4": {
             "Bolt\\NewsWidget\\": "src/"
         }
     },
+    "minimum-stability": "dev",
+    "prefer-stable": true,
     "extra": {
         "entrypoint": "Bolt\\NewsWidget\\Extension"
     }