diff --git a/.circleci/config.yml b/.circleci/config.yml
index 2822021760c..e36f20a23e6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -57,6 +57,7 @@ jobs:
             pip install "pytest-mock==3.12.0"
             pip install python-multipart
             pip install google-cloud-aiplatform
+            pip install prometheus-client==0.20.0
       - save_cache:
           paths:
             - ./venv