diff --git a/tox.ini b/tox.ini
index 29b40ae745..da0c1239a3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -87,6 +87,7 @@ commands =
 changedir = {toxinidir}
 deps = -rrequirements/docs.txt
 commands =
+    python -m pip install --upgrade git+https://github.com/NVIDIA-Merlin/core.git
     sphinx-multiversion --dump-metadata docs/source docs/build/html | jq "keys"
     sphinx-multiversion docs/source docs/build/html