diff --git a/webapi/src/main/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLive.scala b/webapi/src/main/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLive.scala
index 79dec23fb8..17f32ac091 100644
--- a/webapi/src/main/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLive.scala
+++ b/webapi/src/main/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLive.scala
@@ -24,12 +24,14 @@ import org.knora.webapi.slice.admin.repo.rdf.Vocabulary
 import org.knora.webapi.slice.admin.repo.service.KnoraProjectRepoLive.ProjectQueries
 import org.knora.webapi.slice.common.repo.rdf.Errors.RdfError
 import org.knora.webapi.slice.common.repo.rdf.RdfResource
+import org.knora.webapi.store.cache.CacheService
 import org.knora.webapi.store.triplestore.api.TriplestoreService
 import org.knora.webapi.store.triplestore.api.TriplestoreService.Queries.Construct
 import org.knora.webapi.store.triplestore.api.TriplestoreService.Queries.Update
 
 final case class KnoraProjectRepoLive(
   private val triplestore: TriplestoreService,
+  private val cacheService: CacheService,
 ) extends KnoraProjectRepo {
 
   override def findAll(): Task[List[KnoraProject]] =
@@ -108,8 +110,8 @@ final case class KnoraProjectRepoLive(
   }
 
   override def save(project: KnoraProject): Task[KnoraProject] =
-    triplestore.query(ProjectQueries.save(project)).as(project)
-
+    cacheService.clearCache() *>
+      triplestore.query(ProjectQueries.save(project)).as(project)
 }
 
 object KnoraProjectRepoLive {
diff --git a/webapi/src/test/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLiveSpec.scala b/webapi/src/test/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLiveSpec.scala
index 3102db1d6d..5773d8c37f 100644
--- a/webapi/src/test/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLiveSpec.scala
+++ b/webapi/src/test/scala/org/knora/webapi/slice/admin/repo/service/KnoraProjectRepoLiveSpec.scala
@@ -24,6 +24,7 @@ import org.knora.webapi.slice.admin.domain.model.KnoraProject.Shortcode
 import org.knora.webapi.slice.admin.domain.model.KnoraProject.Shortname
 import org.knora.webapi.slice.admin.domain.model.KnoraProject.Status
 import org.knora.webapi.slice.admin.domain.model.RestrictedView
+import org.knora.webapi.store.cache.CacheService
 import org.knora.webapi.store.triplestore.api.TriplestoreServiceInMemory
 
 object KnoraProjectRepoLiveSpec extends ZIOSpecDefault {
@@ -131,5 +132,5 @@ object KnoraProjectRepoLiveSpec extends ZIOSpecDefault {
         },
       ),
     ),
-  ).provide(KnoraProjectRepoLive.layer, TriplestoreServiceInMemory.emptyLayer, StringFormatter.test)
+  ).provide(KnoraProjectRepoLive.layer, TriplestoreServiceInMemory.emptyLayer, CacheService.layer, StringFormatter.test)
 }