diff --git a/src/components/Repository/Readme.jsx b/src/components/Repository/Readme.jsx
index d7395a5d..5050a4de 100644
--- a/src/components/Repository/Readme.jsx
+++ b/src/components/Repository/Readme.jsx
@@ -1,4 +1,5 @@
 import React from 'react'
+import PropTypes from 'prop-types'
 import remark from 'remark'
 import remarkReact from 'remark-react'
 import styles from './Readme.module.scss'
@@ -19,3 +20,9 @@ export default function Readme({ object }) {
         )
     )
 }
+
+Readme.propTypes = {
+    object: PropTypes.shape({
+        text: PropTypes.string.isRequired
+    })
+}