diff --git a/dev-python/contextvars/contextvars-2.4.ebuild b/dev-python/contextvars/contextvars-2.4.ebuild
index 23482225624ea..d4247a17fcc9a 100644
--- a/dev-python/contextvars/contextvars-2.4.ebuild
+++ b/dev-python/contextvars/contextvars-2.4.ebuild
@@ -3,7 +3,8 @@
 
 EAPI=7
 
-PYTHON_COMPAT=( python3_{6..9} )
+# this is a backport, do not add extra impls
+PYTHON_COMPAT=( python3_6 )
 inherit distutils-r1
 
 DESCRIPTION="Backport of Python 3.7 contextvars module (PEP 567) for Python 3.6"