diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d100579..be9bb4d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,11 +1,12 @@
 name: build
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - master
   schedule:
-    - cron:  '0 0 * * WED'
+    - cron:  '0 0 1 * *'
 
 jobs:
   docker: