diff --git a/functions/src/scripts/link-contracts-to-groups.ts b/functions/src/scripts/link-contracts-to-groups.ts
index feda249e..a61c6c6c 100644
--- a/functions/src/scripts/link-contracts-to-groups.ts
+++ b/functions/src/scripts/link-contracts-to-groups.ts
@@ -12,13 +12,21 @@ const adminFirestore = admin.firestore()
 
 const addGroupIdToContracts = async () => {
   const groups = await getValues<Group>(adminFirestore.collection('groups'))
-  const contracts = await getValues<Contract>(
-    adminFirestore.collection('contracts')
-  )
+
   for (const group of groups) {
+    const contracts = await getValues<Contract>(
+      adminFirestore
+        .collection('contracts')
+        .where('groupSlugs', 'array-contains', group.slug)
+    )
     const groupContracts = contracts.filter((contract) =>
       group.contractIds.includes(contract.id)
     )
+    if (groupContracts.length !== contracts.length)
+      console.log(
+        `Found ${groupContracts.length} contracts for group ${group.slug}`
+      )
+
     for (const contract of groupContracts) {
       const oldGroupLinks = contract.groupLinks?.filter(
         (l) => l.slug != group.slug