diff --git a/src/DatePicker.jsx b/src/DatePicker.jsx
index 98616ae3..1068b65a 100644
--- a/src/DatePicker.jsx
+++ b/src/DatePicker.jsx
@@ -140,6 +140,7 @@ export default class DatePicker extends PureComponent {
       returnValue,
       showLeadingZeros,
       value,
+      wrapperClassName,
       yearAriaLabel,
       yearPlaceholder,
     } = this.props;
@@ -161,7 +162,12 @@ export default class DatePicker extends PureComponent {
     };
 
     return (
-      <div className={`${baseClassName}__wrapper`}>
+      <div
+        className={mergeClassNames(
+          `${baseClassName}__wrapper`,
+          wrapperClassName,
+        )}
+      >
         <DateInput
           {...ariaLabelProps}
           {...placeholderProps}