diff --git a/src/theme/book.css b/src/theme/book.css
index 28e9278f..dd9d8e7f 100644
--- a/src/theme/book.css
+++ b/src/theme/book.css
@@ -71,6 +71,7 @@ table thead td {
   -moz-box-sizing: border-box;
   box-sizing: border-box;
   -webkit-overflow-scrolling: touch;
+  overscroll-behavior-y: contain;
   -webkit-transition: -webkit-transform 0.5s;
   -moz-transition: -moz-transform 0.5s;
   -o-transition: -o-transform 0.5s;
diff --git a/src/theme/stylus/sidebar.styl b/src/theme/stylus/sidebar.styl
index 7dd39c0a..7faba9d9 100644
--- a/src/theme/stylus/sidebar.styl
+++ b/src/theme/stylus/sidebar.styl
@@ -11,6 +11,7 @@
     font-size: 0.875em
     box-sizing: border-box
     -webkit-overflow-scrolling: touch
+    overscroll-behavior-y: contain;
 
     // Animation: slide away
     transition: transform 0.5s