diff --git a/package.json b/package.json
index 3fd05d84c0..e502eec341 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "grunt-legacy-util": "^0.2.0",
     "grunt-patch-wordpress": "~0.3.0",
     "grunt-rtlcss": "~1.5.1",
-    "grunt-sass": "~0.16.0",
+    "grunt-sass": "~0.18.0",
     "matchdep": "~0.3.0"
   }
 }
diff --git a/src/wp-admin/css/colors/_admin.scss b/src/wp-admin/css/colors/_admin.scss
index ab550849c2..de5ca164e4 100644
--- a/src/wp-admin/css/colors/_admin.scss
+++ b/src/wp-admin/css/colors/_admin.scss
@@ -357,10 +357,10 @@ ul#adminmenu > li.current > a.current:after {
 	background: $adminbar-input-background;
 }
 
-#wpadminbar #adminbarsearch .adminbar-input::-webkit-input-placeholder { color: $menu-text; opacity: .7; }
-#wpadminbar #adminbarsearch .adminbar-input:-moz-placeholder { color: $menu-text; opacity: .7; }
-#wpadminbar #adminbarsearch .adminbar-input::-moz-placeholder { color: $menu-text; opacity: .7; }
-#wpadminbar #adminbarsearch .adminbar-input:-ms-input-placeholder { color: $menu-text; opacity: .7; }
+#wpadminbar #adminbarsearch .adminbar-input::-webkit-input-placeholder { color: $menu-text; opacity: 0.7; }
+#wpadminbar #adminbarsearch .adminbar-input:-moz-placeholder { color: $menu-text; opacity: 0.7; }
+#wpadminbar #adminbarsearch .adminbar-input::-moz-placeholder { color: $menu-text; opacity: 0.7; }
+#wpadminbar #adminbarsearch .adminbar-input:-ms-input-placeholder { color: $menu-text; opacity: 0.7; }
 
 
 /* Admin Bar: my account */