diff --git a/cluster/kube/k0.libsonnet b/cluster/kube/k0.libsonnet
index 6f245002..d2a54fc6 100644
--- a/cluster/kube/k0.libsonnet
+++ b/cluster/kube/k0.libsonnet
@@ -256,6 +256,16 @@ local rook = import "lib/rook.libsonnet";
                         displayName: "issues",
                     },
                 },
+                # matrix.hackerspace.pl media storage bucket
+                matrixWaw3: kube.CephObjectStoreUser("matrix") {
+                    metadata+: {
+                        namespace: "ceph-waw3",
+                    },
+                    spec: {
+                        store: "waw-hdd-redundant-3-object",
+                        displayName: "matrix",
+                    },
+                },
 
                 # nuke@hackerspace.pl's personal storage.
                 nukePersonalWaw3: kube.CephObjectStoreUser("nuke-personal") {
@@ -319,6 +329,16 @@ local rook = import "lib/rook.libsonnet";
                         displayName: "cz3",
                     },
                 },
+                # informatic's personal user
+                informaticWaw3: kube.CephObjectStoreUser("informatic") {
+                    metadata+: {
+                        namespace: "ceph-waw3",
+                    },
+                    spec: {
+                        store: "waw-hdd-redundant-3-object",
+                        displayName: "informatic",
+                    },
+                },
             },
         },