diff --git a/dev-ml/dune-rpc/dune-rpc-3.16.0.ebuild b/dev-ml/dune-rpc/dune-rpc-3.16.0-r1.ebuild
similarity index 91%
rename from dev-ml/dune-rpc/dune-rpc-3.16.0.ebuild
rename to dev-ml/dune-rpc/dune-rpc-3.16.0-r1.ebuild
index 0c226457e2..8cd60306bd 100644
--- a/dev-ml/dune-rpc/dune-rpc-3.16.0.ebuild
+++ b/dev-ml/dune-rpc/dune-rpc-3.16.0-r1.ebuild
@@ -38,6 +38,12 @@ BDEPEND="
 	>=dev-ml/dune-3.12:=
 "
 
+src_prepare() {
+	default
+
+	rm -r vendor/{csexp,pp} || die
+}
+
 src_configure() {
 	:
 }