diff --git a/themes/bootstrap3/babel.cfg b/themes/bootstrap3/babel.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..227480854202dd5ffa1e78beabd2e9f07f5b0929
--- /dev/null
+++ b/themes/bootstrap3/babel.cfg
@@ -0,0 +1 @@
+[jinja2: templates/**.html]