diff --git a/examples/python/docker-compose.oats.yml b/examples/python/docker-compose.oats.yml
index 93be34a..9a57965 100644
--- a/examples/python/docker-compose.oats.yml
+++ b/examples/python/docker-compose.oats.yml
@@ -7,7 +7,7 @@ services:
       context: .
       dockerfile: Dockerfile
     environment:
-      OTEL_EXPORTER_OTLP_ENDPOINT: http://collector:4318
+      OTEL_EXPORTER_OTLP_ENDPOINT: http://collector:4317
       OTEL_METRIC_EXPORT_INTERVAL: "5000"  # so we don't have to wait 60s for metrics
     ports:
       - "8080:8082"