diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c42a93f..e28c347 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,6 +30,7 @@ jobs:
       MAILOSAUR_API_KEY: ${{ secrets.MAILOSAUR_API_KEY }}
       MAILOSAUR_SERVER: ${{ secrets.MAILOSAUR_SERVER }}
       MAILOSAUR_VERIFIED_DOMAIN: ${{ secrets.MAILOSAUR_VERIFIED_DOMAIN }}
+      MAILOSAUR_PREVIEWS_SERVER: ${{ secrets.MAILOSAUR_PREVIEWS_SERVER }}
 
     steps:
     - uses: actions/checkout@v2
@@ -63,6 +64,7 @@ jobs:
       MAILOSAUR_API_KEY: ${{ secrets.MAILOSAUR_API_KEY }}
       MAILOSAUR_SERVER: ${{ secrets.MAILOSAUR_SERVER }}
       MAILOSAUR_VERIFIED_DOMAIN: ${{ secrets.MAILOSAUR_VERIFIED_DOMAIN }}
+      MAILOSAUR_PREVIEWS_SERVER: ${{ secrets.MAILOSAUR_PREVIEWS_SERVER }}
 
     steps:
     - uses: actions/checkout@v2