diff --git a/lib/compass/_css3.scss b/lib/compass/_css3.scss
index a4aaf73..a0e0241 100644
--- a/lib/compass/_css3.scss
+++ b/lib/compass/_css3.scss
@@ -17,4 +17,5 @@
 @import "css3/regions";
 @import "css3/hyphenation";
 @import "css3/filter";
+@import "css3/pie";
 @import "css3/user-interface";