diff --git a/data/theme/gnome-shell-high-contrast.css b/data/theme/gnome-shell-high-contrast.css
index c26c5c120..ed003f451 100644
--- a/data/theme/gnome-shell-high-contrast.css
+++ b/data/theme/gnome-shell-high-contrast.css
@@ -741,6 +741,13 @@ StScrollBar {
 .datemenu-displays-box {
   spacing: 1em; }
 
+.datemenu-calendar-column {
+  border: 0 solid #0d0d0d; }
+  .datemenu-calendar-column:ltr {
+    border-left-width: 1px; }
+  .datemenu-calendar-column:rtl {
+    border-right-width: 1px; }
+
 .datemenu-today-button,
 .world-clocks-button,
 .weather-button,
diff --git a/data/theme/gnome-shell-sass b/data/theme/gnome-shell-sass
index 296e54514..e94bce1fc 160000
--- a/data/theme/gnome-shell-sass
+++ b/data/theme/gnome-shell-sass
@@ -1 +1 @@
-Subproject commit 296e5451457032e2fd9919135828c213d118664e
+Subproject commit e94bce1fcfbcbe00f6a6375e992192c9e1a4ffb5
diff --git a/data/theme/gnome-shell.css b/data/theme/gnome-shell.css
index e93fd34d9..90aef5061 100644
--- a/data/theme/gnome-shell.css
+++ b/data/theme/gnome-shell.css
@@ -741,6 +741,13 @@ StScrollBar {
 .datemenu-displays-box {
   spacing: 1em; }
 
+.datemenu-calendar-column {
+  border: 0 solid #454c4c; }
+  .datemenu-calendar-column:ltr {
+    border-left-width: 1px; }
+  .datemenu-calendar-column:rtl {
+    border-right-width: 1px; }
+
 .datemenu-today-button,
 .world-clocks-button,
 .weather-button,