diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 2b20f8e..f926d70 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        operating-system: ['ubuntu-latest', 'windows-latest', 'macos-latest']
+        operating-system: ['ubuntu-latest']
         php-versions: ['7.4', '8.0', '8.1']
         phpunit-versions: ['latest']