diff --git a/.gitea/workflows/master.yaml b/.gitea/workflows/master.yaml
index ffe044d..75ac9f2 100644
--- a/.gitea/workflows/master.yaml
+++ b/.gitea/workflows/master.yaml
@@ -39,7 +39,7 @@ jobs:
           context: .
           file: Dockerfile.${{ matrix.version.os }}
           build-args: |
-            OS_VERSION=${{ matrix.version.os }}
+            OS_VERSION=${{ matrix.version.os_version }}
             PHP_VERSION=${{ matrix.version.php_version }}
             PHP_VER_SHORT=${{ matrix.version.php_ver_short }}
           tags: |