diff --git a/scripts/ci/test_index_ref_doc.sh b/scripts/ci/test_index_ref_doc.sh
index 7b5c5edd291..5aa4815eb05 100755
--- a/scripts/ci/test_index_ref_doc.sh
+++ b/scripts/ci/test_index_ref_doc.sh
@@ -5,7 +5,7 @@ set -ex
 echo "Installing azure-cli..."
 
 pip install --pre azure-cli --extra-index-url https://azurecliprod.blob.core.windows.net/edge -q
-pip install "sphinx==1.7.0" -q
+pip install sphinx==1.7.0 Jinja2==3.0.3
 echo "Installed."
 
 python ./scripts/ci/index_ref_doc.py -v