diff --git a/scripts/gen_openapi_server.sh b/scripts/gen_openapi_server.sh
index bd4e6383..eb1367e0 100755
--- a/scripts/gen_openapi_server.sh
+++ b/scripts/gen_openapi_server.sh
@@ -17,11 +17,15 @@ if [[ $(uname) == "Darwin" ]]; then
     sed -i '' 's/, sortOrderParam/, model.SortOrder(sortOrderParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_registry_service.go
     sed -i '' 's/, orderByParam/, model.OrderByField(orderByParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_catalog_service.go
     sed -i '' 's/, sortOrderParam/, model.SortOrder(sortOrderParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_catalog_service.go
+    # remove unused import
+    sed -i '' '/encoding\/json/d' "$PROJECT_ROOT"/internal/server/openapi/api_model_catalog_service.go
 else
     sed -i 's/, orderByParam/, model.OrderByField(orderByParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_registry_service.go
     sed -i 's/, sortOrderParam/, model.SortOrder(sortOrderParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_registry_service.go
     sed -i 's/, orderByParam/, model.OrderByField(orderByParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_catalog_service.go
     sed -i 's/, sortOrderParam/, model.SortOrder(sortOrderParam)/g' "$PROJECT_ROOT"/internal/server/openapi/api_model_catalog_service.go
+    # remove unused import
+    sed -i '/encoding\/json/d' "$PROJECT_ROOT"/internal/server/openapi/api_model_catalog_service.go
 fi
 
 echo "Assembling type_assert Go file"