diff --git a/src/batch_exporter.hpp b/src/batch_exporter.hpp
index a2e65b1..bc889fa 100644
--- a/src/batch_exporter.hpp
+++ b/src/batch_exporter.hpp
@@ -128,6 +128,7 @@ public:
             }
 
             auto scopeSpans = resourceSpans->add_scope_spans();
+            scopeSpans->set_schema_url("https://opentelemetry.io/schemas/1.16.0");
             scopeSpans->mutable_scope()->set_name("nginx");
             scopeSpans->mutable_scope()->set_version(NGINX_VERSION);