diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3a5c66ec..aebd8efa 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -3,7 +3,7 @@ name: build
 on:
   pull_request:
   push:
-    branch:
+    branches:
       - master
 
 jobs:
@@ -13,7 +13,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-          - windows-latest
+            #- windows-latest
             #- macos-latest
         ocaml-compiler:
           - 4.08.x