diff --git a/pom.xml b/pom.xml
index f98a5b6..0187058 100644
--- a/pom.xml
+++ b/pom.xml
@@ -464,7 +464,7 @@ under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.1.2</version>
+        <version>3.2.0</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
@@ -514,7 +514,7 @@ under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.1.2</version>
+        <version>3.2.0</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
@@ -542,7 +542,7 @@ under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>3.17.0</version>
+        <version>3.18.0</version>
         <configuration>
           <!-- targetJdk 1.1, 1.2 is not supported -->
           <targetJdk>1.3</targetJdk>
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 4306d23..c6276ee 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -95,7 +95,7 @@ The <action> type attribute can be add,update,fix,remove.
         Bump maven-dependency-plugin from 2.4 to 3.3.0 #29, #79.
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
-        Bump maven-pmd-plugin from 3.3 to 3.17.0 #28, #90.
+        Bump maven-pmd-plugin from 3.3 to 3.18.0 #28, #90, #100.
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
         Bump maven-assembly-plugin from 2.5 to 3.4.2 #30, #94, #96.
@@ -104,7 +104,7 @@ The <action> type attribute can be add,update,fix,remove.
         Bump servlet-api from 2.3 to 2.5 #27.
       </action>
       <action dev="ggregory" type="update" due-to="Gary Gregory, Dependabot">
-        Bump maven-checkstyle-plugin from 2.7 to 3.1.2 #35.
+        Bump maven-checkstyle-plugin from 2.7 to 3.2.0 #35, #101.
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
         Bump spotbugs-maven-plugin from 4.1.4 to 4.7.1.1 #33, #70, #78, #93, #97.