diff --git a/config/migrations/2025/20251118155546-ingest-aantal-houders-lmb.ttl b/config/migrations/2025/20251118155546-ingest-aantal-houders-lmb.ttl
index afda011..aee78bb 100644
--- a/config/migrations/2025/20251118155546-ingest-aantal-houders-lmb.ttl
+++ b/config/migrations/2025/20251118155546-ingest-aantal-houders-lmb.ttl
@@ -1,6 +1,7 @@
 @prefix mandaat: <http://data.vlaanderen.be/ns/mandaat#> .
 
-<http://data.lblod.info/id/mandaten/68021f6bbdb0835e116b252030c420fc15de36732dc50a50bb76e119bd273ec8>	mandaat:aantalHouders	"7"^^<http://www.w3.org/2001/XMLSchema#integer> .
+<http://data.lblod.info/id/mandaten/4798ccfe6ede00664cd065146da01bc39899e2d3bee6159c4c32f175c218d7a2>	mandaat:aantalHouders	"5"^^<http://www.w3.org/2001/XMLSchema#integer> .
+<http://data.lblod.info/id/mandaten/68021f6bbdb0835e116b252030c420fc15de36732dc50a50bb76e119bd273ec8>	mandaat:aantalHouders	"5"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/23d2744cdb69fbdbbd4aa63f22752e19dc20b9a71bebbf260fa7812c20db483a>	mandaat:aantalHouders	"12"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/1f2984eb2f96754eca1c8c039339ea25fc22c195f7c87bd0c729b0cf4614f305>	mandaat:aantalHouders	"29"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/ec83c3d16c7aa10ea78e8dd944ae2d6c1afaf4d405a93d4cad9a3ec5aab1cf1d>	mandaat:aantalHouders	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
@@ -4199,7 +4200,6 @@
 <http://data.lblod.info/id/mandaten/46b96a2f88208829896529bb3a3e0c9eb6f257f933d463d1f3780c18073189c3>	mandaat:aantalHouders	"23"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/46b29ed386faa17fc9f1f99d9b805613732a86c8e43ed4bcf7f436e7004d9dc3>	mandaat:aantalHouders	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/77340772b69538268c81855f66da20c748944e38b30b86d881381cfe1927596d>	mandaat:aantalHouders	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
-<http://data.lblod.info/id/mandaten/4798ccfe6ede00664cd065146da01bc39899e2d3bee6159c4c32f175c218d7a2>	mandaat:aantalHouders	"6"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/46b33fa116cdaa2c9a3bec2acbd1d86fa19c3b60f12dde69f440a70db3a8fa5c>	mandaat:aantalHouders	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/1d5cc3e28b5a5af446591d8f72ac12c069ac9a34e7b1fbf84dd41d102d90d6e9>	mandaat:aantalHouders	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
 <http://data.lblod.info/id/mandaten/0bbd48a5b3c4b1ea70728dae735789cbfccb26acde0b0645ea3cbba2f9533434>	mandaat:aantalHouders	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
diff --git a/config/resources/domain.json b/config/resources/domain.json
index f335d76..3976e11 100644
--- a/config/resources/domain.json
+++ b/config/resources/domain.json
@@ -252,6 +252,12 @@
     "mandates": {
       "class": "mandaat:Mandaat",
       "super": ["posts"],
+      "attributes": {
+        "aantal-houders": {
+          "type": "number",
+          "predicate": "mandaat:aantalHouders"
+        }
+      },
       "relationships": {
         "role-board": {
           "predicate": "org:role",