diff --git a/.gitea/workflows/test.yml b/.gitea/workflows/test.yml
index 959709c..377ec59 100644
--- a/.gitea/workflows/test.yml
+++ b/.gitea/workflows/test.yml
@@ -54,9 +54,10 @@ jobs:
             echo "Installing fresh dependencies..."
             python3 -m venv venv
             . venv/bin/activate
-            pip install --cache-dir=$PIP_CACHE_DIR -r requirements.txt
-            pip install --cache-dir=$PIP_CACHE_DIR -r requirements-dev.txt
-            pip install --cache-dir=$PIP_CACHE_DIR pytest-timeout
+            # Use Tsinghua PyPI mirror for faster downloads in China
+            pip install --cache-dir=$PIP_CACHE_DIR -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements.txt
+            pip install --cache-dir=$PIP_CACHE_DIR -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements-dev.txt
+            pip install --cache-dir=$PIP_CACHE_DIR -i https://pypi.tuna.tsinghua.edu.cn/simple pytest-timeout
             # Save to cache
             echo "Saving venv to cache $CACHE_KEY..."
             cp -a venv $CACHE_DIR/