diff --git a/requirements.txt b/requirements.txt
index 6c38399..c50d3f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ jsonify
 waitress
 PyHamcrest
 requests_mock
-dataclasses-json
+dataclasses-json==0.6.4
 python-dotenv
 pytest
 git+https://github.com/ucsd-ets/awsed_python_client.git@2024.2.1-RC1