diff --git a/dev-python/intervaltree/intervaltree-3.2.0.ebuild b/dev-python/intervaltree/intervaltree-3.2.0-r1.ebuild
similarity index 88%
rename from dev-python/intervaltree/intervaltree-3.2.0.ebuild
rename to dev-python/intervaltree/intervaltree-3.2.0-r1.ebuild
index d785d5361756b..5522a16f7e4b8 100644
--- a/dev-python/intervaltree/intervaltree-3.2.0.ebuild
+++ b/dev-python/intervaltree/intervaltree-3.2.0-r1.ebuild
@@ -18,5 +18,9 @@ LICENSE="Apache-2.0"
 SLOT="0"
 KEYWORDS="~amd64 ~arm64 ~riscv ~x86"
 
+RDEPEND="
+	>=dev-python/sortedcontainers-2.4.0[${PYTHON_USEDEP}]
+"
+
 EPYTEST_PLUGINS=()
 distutils_enable_tests pytest