diff --git a/basis/changer/authors.txt b/extra/changer/authors.txt
similarity index 100%
rename from basis/changer/authors.txt
rename to extra/changer/authors.txt
diff --git a/basis/changer/changer-docs.factor b/extra/changer/changer-docs.factor
similarity index 100%
rename from basis/changer/changer-docs.factor
rename to extra/changer/changer-docs.factor
diff --git a/basis/changer/changer-tests.factor b/extra/changer/changer-tests.factor
similarity index 100%
rename from basis/changer/changer-tests.factor
rename to extra/changer/changer-tests.factor
diff --git a/basis/changer/changer.factor b/extra/changer/changer.factor
similarity index 100%
rename from basis/changer/changer.factor
rename to extra/changer/changer.factor