diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3f8ffb9..52f86fa 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,6 +2,8 @@ name: Build and publish
 
 on:
   workflow_dispatch:
+  schedule:
+    - cron: "0 3 * * 3" # Build the preview image every Wednesday at 03:00
   release:
     types:
       - published
@@ -10,6 +12,7 @@ on:
       - main
       - feature/**
     paths:
+      - .github/**
       - docker/**
       - tests/**
 
diff --git a/.github/workflows/remove-untagged.yml b/.github/workflows/remove-untagged.yml
index b6ba64b..286fb3d 100644
--- a/.github/workflows/remove-untagged.yml
+++ b/.github/workflows/remove-untagged.yml
@@ -3,7 +3,7 @@ name: Remove untagged images
 on:
   workflow_dispatch:
   schedule:
-    - cron: "0 3 * * 1"
+    - cron: "0 4 * * *" # Every day at 04:00
 
 jobs:
   remove-untagged: