diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index a7ed798..726bff2 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -51,7 +51,7 @@ jobs:
           rm -rf /tmp/ci-venv-test
           python3 -m venv /tmp/ci-venv-test
           /tmp/ci-venv-test/bin/pip install --quiet --upgrade pip
-          /tmp/ci-venv-test/bin/pip install --quiet --no-cache-dir fastapi pydantic pyyaml uvicorn requests pytest pytest-asyncio httpx
+          /tmp/ci-venv-test/bin/pip install --quiet --no-cache-dir 'fastapi' 'pydantic<2' pyyaml uvicorn requests pytest pytest-asyncio httpx
 
       - name: Debug environment
         run: |