diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 5c6ca92..b98b4e5 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -15,7 +15,10 @@ permissions:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/src/greptimedb_mcp_server/utils.py b/src/greptimedb_mcp_server/utils.py
index b3d9e36..cf30e61 100644
--- a/src/greptimedb_mcp_server/utils.py
+++ b/src/greptimedb_mcp_server/utils.py
@@ -72,11 +72,15 @@ def templates_loader() -> dict[str, dict[str, str]]:
         category_path = os.path.join(template_dir, category)
         if os.path.isdir(category_path):
             # Load config
-            with open(os.path.join(category_path, "config.yaml"), "r") as f:
+            with open(
+                os.path.join(category_path, "config.yaml"), "r", encoding="utf-8"
+            ) as f:
                 config = yaml.safe_load(f)
 
             # Load template
-            with open(os.path.join(category_path, "template.md"), "r") as f:
+            with open(
+                os.path.join(category_path, "template.md"), "r", encoding="utf-8"
+            ) as f:
                 template = f.read()
 
             templates[category] = {"config": config, "template": template}