diff --git a/airflow/www/static/main.css b/airflow/www/static/main.css
index 57164b94e5ccf..147695c4a9591 100644
--- a/airflow/www/static/main.css
+++ b/airflow/www/static/main.css
@@ -262,3 +262,4 @@ div.square {
 .sc { color: #BA2121 } /* Literal.String.Char */
 .sd { color: #BA2121; font-style: italic } /* Literal.String.Doc */
 .s2 { color: #BA2121 } /* Literal.String.Double */
+.s1 { color: #BA2121 } /* Literal.String.Single */
diff --git a/airflow/www_rbac/static/main.css b/airflow/www_rbac/static/main.css
index 5a10bfd34dc62..ab39d44d9e1a7 100644
--- a/airflow/www_rbac/static/main.css
+++ b/airflow/www_rbac/static/main.css
@@ -265,3 +265,4 @@ div.square {
 .sc { color: #BA2121 } /* Literal.String.Char */
 .sd { color: #BA2121; font-style: italic } /* Literal.String.Doc */
 .s2 { color: #BA2121 } /* Literal.String.Double */
+.s1 { color: #BA2121 } /* Literal.String.Single */