diff --git a/warehouse/static/sass/blocks/_code-block.scss b/warehouse/static/sass/blocks/_code-block.scss
index 8bd2ab64b044..9cf39d7977f0 100644
--- a/warehouse/static/sass/blocks/_code-block.scss
+++ b/warehouse/static/sass/blocks/_code-block.scss
@@ -30,4 +30,5 @@ A custom styled code block.
   margin-bottom: $spacing-unit / 2;
   word-break: break-all;
   direction: ltr;
+  overflow-x: auto;
 }