diff --git a/docbook/Developers_Guide/en-US/images/erd.png b/docbook/Developers_Guide/en-US/images/erd.png
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diff --git a/docbook/erd/README.md b/docbook/erd/README.md
index 009e17e810..ca8f40a3b5 100644
--- a/docbook/erd/README.md
+++ b/docbook/erd/README.md
@@ -1,7 +1,7 @@
 The MantisBT Entity-Relationship Diagram
 ========================================
 
-The diagram was built using MySQL Workbench [1] version 5.2.40. The MantisBT
+The diagram was built using MySQL Workbench [1] version 6.3.6. The MantisBT
 schema was reverse-engineered based on a freshly installed database, then the
 relationships between tables and corresponding cardinalities were manually
 added.
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