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diff --git a/doc/source/workers.rst b/doc/source/workers.rst
index c8dbb6fcd..479d02a52 100644
--- a/doc/source/workers.rst
+++ b/doc/source/workers.rst
@@ -78,7 +78,7 @@ is designed to accept/publish messages from/into a named exchange.
 High level architecture
 -----------------------
 
-.. image:: img/worker-engine.png
+.. image:: img/worker-engine.svg
    :height: 340px
    :align: right