diff --git a/nifi/nifi-commons/nifi-hl7-query-language/pom.xml b/nifi/nifi-commons/nifi-hl7-query-language/pom.xml
index eb468416fb..b6ead092c6 100644
--- a/nifi/nifi-commons/nifi-hl7-query-language/pom.xml
+++ b/nifi/nifi-commons/nifi-hl7-query-language/pom.xml
@@ -48,7 +48,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/hypoglycemia</exclude>
                         <exclude>src/test/resources/hyperglycemia</exclude>
                     </excludes>
diff --git a/nifi/nifi-docs/pom.xml b/nifi/nifi-docs/pom.xml
index 1494745dd8..c3d67350b9 100644
--- a/nifi/nifi-docs/pom.xml
+++ b/nifi/nifi-docs/pom.xml
@@ -107,7 +107,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/main/asciidoc/asciidoc-mod.css</exclude> <!-- MIT license confirmed.  Excluding due to parse error-->
                     </excludes>
                 </configuration>
diff --git a/nifi/nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/pom.xml b/nifi/nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/pom.xml
index cada04e5bb..c69c3c819b 100644
--- a/nifi/nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/pom.xml
@@ -61,7 +61,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/hello.txt</exclude>
                     </excludes>
                 </configuration>
diff --git a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/pom.xml b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/pom.xml
index 4cb2196fd0..82712e2858 100644
--- a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/pom.xml
@@ -137,7 +137,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/org/apache/nifi/cluster/firewall/impl/empty.txt</exclude>
                         <exclude>src/test/resources/org/apache/nifi/cluster/firewall/impl/ips.txt</exclude>
                     </excludes>
diff --git a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/pom.xml b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/pom.xml
index 31aec72702..c7904193c0 100644
--- a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/pom.xml
@@ -127,7 +127,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/conf/0bytes.xml</exclude>
                         <exclude>src/test/resources/conf/termination-only.xml</exclude>
                         <exclude>src/test/resources/hello.txt</exclude>
diff --git a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-content-viewer/pom.xml b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-content-viewer/pom.xml
index ad01ab855a..a0d3f486c8 100644
--- a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-content-viewer/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-content-viewer/pom.xml
@@ -94,7 +94,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/main/webapp/js/hexview/hexview.default.css</exclude>
                         <exclude>src/main/webapp/js/hexview/hexview.js</exclude>
                     </excludes>
diff --git a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-ui/pom.xml b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-ui/pom.xml
index ca9738f18f..84e0f8aba4 100644
--- a/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-ui/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-ui/pom.xml
@@ -595,7 +595,7 @@
                         <groupId>org.apache.rat</groupId>
                         <artifactId>apache-rat-plugin</artifactId>
                         <configuration>
-                            <excludes>
+                            <excludes combine.children="append">
                                 <exclude>nbactions.xml</exclude>
                                 <exclude>src/main/webapp/js/json2.js</exclude>
                                 <exclude>src/main/webapp/js/jquery/</exclude>
diff --git a/nifi/nifi-nar-bundles/nifi-hl7-bundle/nifi-hl7-processors/pom.xml b/nifi/nifi-nar-bundles/nifi-hl7-bundle/nifi-hl7-processors/pom.xml
index 6c045b88b9..12d2d714be 100644
--- a/nifi/nifi-nar-bundles/nifi-hl7-bundle/nifi-hl7-processors/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-hl7-bundle/nifi-hl7-processors/pom.xml
@@ -31,7 +31,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/hypoglycemia.hl7</exclude>
                     </excludes>
                 </configuration>
diff --git a/nifi/nifi-nar-bundles/nifi-solr-bundle/nifi-solr-processors/pom.xml b/nifi/nifi-nar-bundles/nifi-solr-bundle/nifi-solr-processors/pom.xml
index 261dc92c97..35c3b44484 100644
--- a/nifi/nifi-nar-bundles/nifi-solr-bundle/nifi-solr-processors/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-solr-bundle/nifi-solr-processors/pom.xml
@@ -95,7 +95,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/solr/solr.xml</exclude>
                         <exclude>src/test/resources/testCollection/core.properties</exclude>
                         <exclude>src/test/resources/testCollection/conf/_rest_managed.json</exclude>
diff --git a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/pom.xml b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/pom.xml
index a80fe08832..f8c272ca56 100644
--- a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/pom.xml
+++ b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/pom.xml
@@ -179,7 +179,7 @@
                 <groupId>org.apache.rat</groupId>
                 <artifactId>apache-rat-plugin</artifactId>
                 <configuration>
-                    <excludes>
+                    <excludes combine.children="append">
                         <exclude>src/test/resources/localhost.cer</exclude>
                         <exclude>src/test/resources/hello.txt</exclude>
                         <exclude>src/test/resources/CharacterSetConversionSamples/Converted.txt</exclude>