diff --git a/History.markdown b/History.markdown
index a27a88c1..b0285112 100644
--- a/History.markdown
+++ b/History.markdown
@@ -10,7 +10,7 @@
 
 ### Site Enhancements
 
-## 1.4.0 / 2013-12-7
+## 1.4.0 / 2013-12-07
 
 ### Major Enhancements
   * Add support for TOML config files (#1765)
diff --git a/site/docs/history.md b/site/docs/history.md
index a4938fa7..db10e10d 100644
--- a/site/docs/history.md
+++ b/site/docs/history.md
@@ -5,7 +5,7 @@ permalink: /docs/history/
 prev_section: contributing
 ---
 
-## 1.4.0 / 2013-12-7
+## 1.4.0 / 2013-12-07
 
 ### Major Enhancements
 - Add support for TOML config files ([#1765]({{ site.repository }}/issues/1765))