diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 9abcc6b303..a95400ec7b 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -48,6 +48,7 @@
     <action type="update" dev="ggregory" due-to="Dependabot, Gary Gregory">Bump org.hamcrest:hamcrest from 2.2 to 3.0 #522, #532.</action>
     <action type="update" dev="ggregory" due-to="Dependabot, Gary Gregory">Bump com.google.guava:guava-testlib from 33.2.1-jre to 33.3.0-jre #531.</action>
     <action type="update" dev="ggregory" due-to="Gary Gregory">Bump MathJax from 2.7.2 to 2.7.9.</action>
+    <action type="update" dev="ggregory" due-to="Dependabot, Gary Gregory">Bump org.easymock:easymock from 5.3.0 to 5.4.0 #521.</action>       
   </release>
   <release version="4.5.0-M2" date="2024-06-15" description="This milestone release requires Java 8 and adds the package `org.apache.commons.collections4.bloomfilter`.">
      <!-- ADD -->