diff --git a/.kokoro/build.sh b/.kokoro/build.sh
index fc11a9c8e0..ebc6c5d4b9 100755
--- a/.kokoro/build.sh
+++ b/.kokoro/build.sh
@@ -61,6 +61,9 @@ EOL
 [global]
 index-url = https://us-python.pkg.dev/artifact-foundry-prod/python-3p-trusted/simple/
 EOL
+python3 -m pip install --upgrade pip
+python3 -m pip install -r .kokoro/requirements-auth.txt -i https://pypi.org/simple/ --require-hashes --only-binary :all:
+python3 -m pip install 'grpcio' --verbose
 fi
 
 # If NOX_SESSION is set, it only runs the specified session,