diff --git a/extra/classes/tuple/change-tracking/change-tracking-tests.factor b/extra/classes/tuple/change-tracking/change-tracking-tests.factor
index e0289500bc..633707b23e 100644
--- a/extra/classes/tuple/change-tracking/change-tracking-tests.factor
+++ b/extra/classes/tuple/change-tracking/change-tracking-tests.factor
@@ -1,4 +1,4 @@
-USING: classes.tuple.change-tracking tools.test ;
+USING: classes.tuple.change-tracking tools.test strings accessors kernel continuations ;
 IN: classes.tuple.change-tracking.tests
 
 TUPLE: resource < change-tracking-tuple