diff --git a/debian/rules b/debian/rules
index 5789cd9..d36125a 100755
--- a/debian/rules
+++ b/debian/rules
@@ -19,7 +19,7 @@ override_dh_sphinxdoc: export http_proxy=127.0.0.1:9
 override_dh_sphinxdoc: export https_proxy=127.0.0.1:9
 override_dh_sphinxdoc:
 ifeq (,$(findstring nodocs, $(DEB_BUILD_OPTIONS)))
-	PYTHONPATH=. /usr/share/sphinx/scripts/python3/sphinx-build -N -q -E -b html docs/ debian/python-terminaltables3-doc/usr/share/doc/python-terminaltables3-doc/html/
+	TZ=UTC PYTHONPATH=. /usr/share/sphinx/scripts/python3/sphinx-build -N -q -E -b html docs/ debian/python-terminaltables3-doc/usr/share/doc/python-terminaltables3-doc/html/
 	dh_sphinxdoc
 endif