diff --git a/pom.xml b/pom.xml
index 2147850d1..bc1ea7d49 100644
--- a/pom.xml
+++ b/pom.xml
@@ -560,7 +560,7 @@
     <!-- The RC version used in the staging repository URL. -->
     <commons.rc.version>RC1</commons.rc.version>
     <checkstyle.version>3.1.1</checkstyle.version>
-    <checkstyle.dep.version>8.39</checkstyle.dep.version>
+    <checkstyle.dep.version>8.40</checkstyle.dep.version>
 
     <commons.site.path>collections</commons.site.path>
     <commons.scmPubUrl>https://svn.apache.org/repos/infra/websites/production/commons/content/proper/commons-collections</commons.scmPubUrl>
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 0b665afaf..032150bb9 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -182,7 +182,8 @@
       Bump checkstyle from 8.36 to 8.36.2 #184.
       Bump checkstyle from 8.36.2 to 8.37 #192.
       Bump checkstyle from 8.37 to 8.38 #199.
-      Bump checkstyle from 8.38 to 8.39 #204.      
+      Bump checkstyle from 8.38 to 8.39 #204.
+      Bump checkstyle from 8.39 to 8.40 #212.
     </action>
     <action dev="ggregory" type="update" due-to="Chen, Bruno P. Kinoshita, Gary Gregory, Michael Osipov">
       Better NPE messages in CollectionUtils with Objects.requireNonNull #117.