diff --git a/src/Article.js b/src/Article.js
index 56aa75a..7e09b85 100644
--- a/src/Article.js
+++ b/src/Article.js
@@ -46,6 +46,10 @@ class Article extends Component {
     let year = date.getUTCFullYear();
     let month = date.getUTCMonth() + 1;
 
+    if (month < 10) {
+      month = '0' + month.toString();
+    }
+
     let slug = this.props.article.slug;
     if (!slug) {
       slug = slugify(this.props.article.title);