diff --git a/ci/travis-36-doc.yaml b/ci/travis-36-doc.yaml
index c22dddbe0ba3f..8705b82412e7c 100644
--- a/ci/travis-36-doc.yaml
+++ b/ci/travis-36-doc.yaml
@@ -36,6 +36,7 @@ dependencies:
   - sphinx
   - sqlalchemy
   - statsmodels
+  - tzlocal
   - xarray
   - xlrd
   - xlsxwriter