diff --git a/.github/workflows/link_check.yml b/.github/workflows/link_check.yml
index a88612d4..03affab0 100644
--- a/.github/workflows/link_check.yml
+++ b/.github/workflows/link_check.yml
@@ -57,6 +57,7 @@ jobs:
           echo "Changed files: ${CHANGED_FILES}"
           if [ -n "${CHANGED_FILES}" ]; then
             echo "Running link check on changed notebook files..."
+            yarn add pytest
             yarn run pytest -v --check-links-ignore "https://(api|web)\.smith\.langchain\.com/.*" --check-links-ignore "https://x.com/.*" --check-links ${CHANGED_FILES} || ([ $? = 5 ] && exit 0 || exit $?)
           else
             echo "No notebook files changed."