diff --git a/notebooks_tsqr/NightLog.ipynb b/notebooks_tsqr/NightLog.ipynb
index 26b187a..f9dd8f6 100644
--- a/notebooks_tsqr/NightLog.ipynb
+++ b/notebooks_tsqr/NightLog.ipynb
@@ -106,6 +106,7 @@
    "source": [
     "# When running under Times Square, install pkg from github.\n",
     "# Otherwise use what is installed locally (intended to be dev editiable pkg)\n",
+    "if os.environ.get('EXTERNAL_INSTANCE_URL'):\n",
     "    print('Installing \"lsst.ts.logging_and_reporting\" from github using \"prototype\" branch....')\n",
     "    !pip install git+https://github.com/lsst-ts/ts_logging_and_reporting.git@prototype >/dev/null\n",
     "import lsst.ts.logging_and_reporting.source_adapters as sad\n",