diff --git a/server/src/utils/works.js b/server/src/utils/works.js
index e64997f..a46961c 100644
--- a/server/src/utils/works.js
+++ b/server/src/utils/works.js
@@ -93,6 +93,9 @@ const getFosmQuery = (options, pit, searchAfter) => {
       },
     });
   }
+  if (options?.excludedRors?.length > 0) {
+    query.query.bool.must_not.push({ terms: { 'rors.keyword': options.excludedRors.split(' ') } });
+  }
   return query;
 };
 
@@ -357,6 +360,9 @@ const getOpenAlexPublicationsByYear = (options, cursor = '*', previousResponse =
   if (options.openAlexExclusions.length) {
     url += `,${options.openAlexExclusions.map((institutionId) => `authorships.institutions.lineage:!${institutionId}`).join()}`;
   }
+  if (options?.excludedRors?.length) {
+    url += `,${options.excludedRors.split(' ').map((excludedRor) => `institutions.ror:!${excludedRor}`).join()}`;
+  }
   // Polite mode https://docs.openalex.org/how-to-use-the-api/rate-limits-and-authentication#the-polite-pool
   if (process?.env?.OPENALEX_KEY) {
     url += `&api_key=${process.env.OPENALEX_KEY}`;