diff --git a/dev-ml/re/re-1.13.0.ebuild b/dev-ml/re/re-1.13.0-r1.ebuild
similarity index 94%
rename from dev-ml/re/re-1.13.0.ebuild
rename to dev-ml/re/re-1.13.0-r1.ebuild
index e135ea7f1a860..6f27afe7e5e6a 100644
--- a/dev-ml/re/re-1.13.0.ebuild
+++ b/dev-ml/re/re-1.13.0-r1.ebuild
@@ -32,7 +32,10 @@ DEPEND="
 	${RDEPEND}
 "
 BDEPEND="
-	test? ( dev-ml/ounit2 )
+	test? (
+		dev-ml/ounit2
+		dev-ml/ppx_expect
+	)
 "
 
 PATCHES=( "${FILESDIR}"/${P}-noSeq.patch )