diff --git a/sci-libs/dealii/dealii-9.3.1-r4.ebuild b/sci-libs/dealii/dealii-9.3.1-r5.ebuild
similarity index 99%
rename from sci-libs/dealii/dealii-9.3.1-r4.ebuild
rename to sci-libs/dealii/dealii-9.3.1-r5.ebuild
index fd92a22d5d4f5..78407e89e17ec 100644
--- a/sci-libs/dealii/dealii-9.3.1-r4.ebuild
+++ b/sci-libs/dealii/dealii-9.3.1-r5.ebuild
@@ -46,7 +46,7 @@ RDEPEND="dev-libs/boost:=
 	dev-cpp/tbb:=
 	adolc? ( sci-libs/adolc )
 	arpack? ( sci-libs/arpack[mpi=] )
-	assimp? ( media-libs/assimp )
+	assimp? ( media-libs/assimp:= )
 	cuda? ( dev-util/nvidia-cuda-toolkit )
 	ginkgo? ( sci-libs/ginkgo )
 	gmsh? ( sci-libs/gmsh )
diff --git a/sci-libs/dealii/dealii-9.3.3.ebuild b/sci-libs/dealii/dealii-9.3.3-r1.ebuild
similarity index 99%
rename from sci-libs/dealii/dealii-9.3.3.ebuild
rename to sci-libs/dealii/dealii-9.3.3-r1.ebuild
index 22a232df4f6e3..a093157e2d71f 100644
--- a/sci-libs/dealii/dealii-9.3.3.ebuild
+++ b/sci-libs/dealii/dealii-9.3.3-r1.ebuild
@@ -46,7 +46,7 @@ RDEPEND="dev-libs/boost:=
 	dev-cpp/tbb:=
 	adolc? ( sci-libs/adolc )
 	arpack? ( sci-libs/arpack[mpi=] )
-	assimp? ( media-libs/assimp )
+	assimp? ( media-libs/assimp:= )
 	cuda? ( dev-util/nvidia-cuda-toolkit )
 	ginkgo? ( sci-libs/ginkgo )
 	gmsh? ( sci-libs/gmsh )
diff --git a/sci-libs/dealii/dealii-9999.ebuild b/sci-libs/dealii/dealii-9999.ebuild
index 6772cef5a5b65..1fd234c472ace 100644
--- a/sci-libs/dealii/dealii-9999.ebuild
+++ b/sci-libs/dealii/dealii-9999.ebuild
@@ -47,7 +47,7 @@ RDEPEND="dev-libs/boost:=
 	dev-cpp/tbb:=
 	adolc? ( sci-libs/adolc )
 	arpack? ( sci-libs/arpack[mpi=] )
-	assimp? ( media-libs/assimp )
+	assimp? ( media-libs/assimp:= )
 	cuda? ( dev-util/nvidia-cuda-toolkit )
 	ginkgo? ( sci-libs/ginkgo )
 	gmsh? ( sci-libs/gmsh )