diff --git a/src/main/scala/org/broadinstitute/dsde/firecloud/webservice/ExportEntitiesApiService.scala b/src/main/scala/org/broadinstitute/dsde/firecloud/webservice/ExportEntitiesApiService.scala
index 053731e6f..21cb1e9a3 100644
--- a/src/main/scala/org/broadinstitute/dsde/firecloud/webservice/ExportEntitiesApiService.scala
+++ b/src/main/scala/org/broadinstitute/dsde/firecloud/webservice/ExportEntitiesApiService.scala
@@ -19,7 +19,8 @@ trait ExportEntitiesApiService
     extends Directives
     with RequestBuilding
     with StandardUserInfoDirectives
-    with LazyLogging {
+    with LazyLogging
+    with SprayJsonSupport {
 
   val exportEntitiesByTypeConstructor: ExportEntitiesByTypeArguments => ExportEntitiesByTypeActor