diff --git a/sci-libs/flann/flann-1.9.1-r5.ebuild b/sci-libs/flann/flann-1.9.1-r6.ebuild
similarity index 97%
rename from sci-libs/flann/flann-1.9.1-r5.ebuild
rename to sci-libs/flann/flann-1.9.1-r6.ebuild
index 6f4b7099f0e91..8f253ff0802e7 100644
--- a/sci-libs/flann/flann-1.9.1-r5.ebuild
+++ b/sci-libs/flann/flann-1.9.1-r6.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -24,7 +24,7 @@ DEPEND="
 	cuda? ( >=dev-util/nvidia-cuda-toolkit-5.5 )
 	mpi? (
 		dev-libs/boost:=[mpi]
-		sci-libs/hdf5[mpi]
+		sci-libs/hdf5:=[mpi]
 	)
 	!mpi? ( !sci-libs/hdf5[mpi] )
 	octave? ( >=sci-mathematics/octave-3.6.4-r1:= )