Merge branch 'pr-227'

This closes #227
diff --git a/pom.xml b/pom.xml
index c6106dc..2920975 100644
--- a/pom.xml
+++ b/pom.xml
@@ -57,7 +57,7 @@
     <commons.jacoco.version>0.8.6</commons.jacoco.version>
     <commons.javadoc.version>3.2.0</commons.javadoc.version>
 
-    <graalvm.version>21.0.0.2</graalvm.version>
+    <graalvm.version>21.1.0</graalvm.version>
 
     <commons.japicmp.version>0.15.3</commons.japicmp.version>
     <japicmp.skip>false</japicmp.skip>
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 2a623ae..1a19640 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -67,7 +67,7 @@
     <action                  type="update" dev="kinow" due-to="Dependabot">Bump commons-parent from 51 to 52 #145.</action>
     <action                  type="update" dev="kinow" due-to="Dependabot">Bump actions/checkout from v1 to v2.3.4 #138 #146 #165 #183.</action>
     <action                  type="update" dev="kinow" due-to="Dependabot">Bump maven-pmd-plugin from 3.13.0 to 3.14.0 #186.</action>
-    <action                  type="update" dev="ggregory" due-to="Dependabot">Bump graalvm.version from 20.2.0 to 21.0.0.2 #185 #198 #206.</action>
+    <action                  type="update" dev="ggregory" due-to="Dependabot">Bump graalvm.version from 20.2.0 to 21.1.0 #185 #198 #206 #227.</action>
     <action                  type="update" dev="ggregory" due-to="Arturo Bernal">Minor Improvements #192.</action>
     <action                  type="update" dev="ggregory" due-to="Gary Gregory">Update commons.japicmp.version 0.14.3 -> 0.15.3.</action>
     <action                  type="update" dev="ggregory" due-to="Gary Gregory">Update commons.jacoco.version 0.8.5 to 0.8.6; fixes Java 15 build.</action>