diff --git a/app/assets/stylesheets/shared/datetime_picker.scss b/app/assets/stylesheets/shared/datetime_picker.scss
index 9d6721fe8..88d52ba74 100644
--- a/app/assets/stylesheets/shared/datetime_picker.scss
+++ b/app/assets/stylesheets/shared/datetime_picker.scss
@@ -5,6 +5,10 @@
     margin: 0;
   }
 
+  .datepicker tbody .day {
+    font-size: 13px;
+  }
+
   .timepicker-picker {
     padding: 0 60px;