diff --git a/lib/compass/frameworks/compass/stylesheets/compass/_css3.sass b/lib/compass/frameworks/compass/stylesheets/compass/_css3.sass
index 1fbda064..36aa9593 100644
--- a/lib/compass/frameworks/compass/stylesheets/compass/_css3.sass
+++ b/lib/compass/frameworks/compass/stylesheets/compass/_css3.sass
@@ -11,3 +11,4 @@
 @import css3/background_size.sass
 @import css3/font_face.sass
 @import css3/transform.sass
+@import css3/transition.sass