Merge branch 'pr-247'

This closes #247
diff --git a/pom.xml b/pom.xml
index 640568b..c7f3f14 100644
--- a/pom.xml
+++ b/pom.xml
@@ -51,7 +51,7 @@
     <checkstyle.version>8.44</checkstyle.version>
 
     <spotbugs.plugin.version>4.2.3</spotbugs.plugin.version>
-    <spotbugs.impl.version>4.2.3</spotbugs.impl.version>
+    <spotbugs.impl.version>4.3.0</spotbugs.impl.version>
     
     <commons.mockito.version>3.11.2</commons.mockito.version>
     <commons.jacoco.version>0.8.6</commons.jacoco.version>
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 26110b3..2814095 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -71,7 +71,7 @@
     <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>
-    <action                  type="update" dev="ggregory" due-to="Gary Gregory">Update spotbugs from 4.1.3 to 4.2.3 #175, 189, #209 #218.</action>
+    <action                  type="update" dev="ggregory" due-to="Gary Gregory">Update spotbugs from 4.1.3 to 4.3.0 #175, 189, #209 #218 #247.</action>
     <action                  type="update" dev="ggregory" due-to="Arturo Bernal">Minor Improvements #196..</action>
     <action                  type="update" dev="kinow" due-to="Dependabot">Bump maven-checkstyle-plugin from 3.1.1 to 3.1.2 #202.</action>
     <action                  type="update" dev="kinow" due-to="Dependabot">Bump actions/cache from v2 to v2.1.6 #205 #217 #234.</action>