diff --git a/dev-python/dataclasses/dataclasses-0.7.ebuild b/dev-python/dataclasses/dataclasses-0.7.ebuild
index 195170403189a..6611387cc5988 100644
--- a/dev-python/dataclasses/dataclasses-0.7.ebuild
+++ b/dev-python/dataclasses/dataclasses-0.7.ebuild
@@ -3,6 +3,7 @@
 
 EAPI=7
 
+# this is a backport. do not add extra impls
 PYTHON_COMPAT=( python3_6 )
 inherit distutils-r1