diff --git a/gerbil-manager-web/src/pedigree/__tests__/build.test.ts b/gerbil-manager-web/src/pedigree/__tests__/build.test.ts
index 1d30804..9e78e63 100644
--- a/gerbil-manager-web/src/pedigree/__tests__/build.test.ts
+++ b/gerbil-manager-web/src/pedigree/__tests__/build.test.ts
@@ -38,7 +38,16 @@ function makeGerbil(id: string, name: string, litterId: string | null = null): G
 }
 
 function makeLitter(id: string, fatherId: string | null, motherId: string | null): Litter {
-  return { id, name: `Wurf ${id}`, date: '2025-01-01', totalBorn: null, fatherId, motherId }
+  return {
+    id,
+    name: `Wurf ${id}`,
+    date: '2025-01-01',
+    totalBorn: null,
+    expectedGoHomeDate: null,
+    notes: null,
+    fatherId,
+    motherId,
+  }
 }
 
 interface CountingSource extends PedigreeSource {