diff --git a/sys-apps/caelestia-cli/caelestia-cli-9999.ebuild b/sys-apps/caelestia-cli/caelestia-cli-9999.ebuild
index d03f48a..f8854c5 100644
--- a/sys-apps/caelestia-cli/caelestia-cli-9999.ebuild
+++ b/sys-apps/caelestia-cli/caelestia-cli-9999.ebuild
@@ -4,7 +4,7 @@
 EAPI=8
 
 DISTUTILS_USE_PEP517=hatchling
-PYTHON_COMPAT=python3
+PYTHON_COMPAT=( python3 )
 
 inherit git-r3 distutils-r1 shell-completion