diff --git a/README.md b/README.md
index 66432b0..40b3e0b 100644
--- a/README.md
+++ b/README.md
@@ -28,15 +28,13 @@ maven-javadoc-plugin.version|2.10.4
 maven-source-plugin.version|3.0.1
 maven-gpg-plugin.version|1.6
 maven-deploy-plugin.version|2.8.2
-maven-checkstyle-plugin.version|2.17
-checkstyle.version|7.1.1
-sevntu-checkstyle-maven-plugin.version|1.21.0
-kemitix-checkstyle-ruleset.version|1.0.0
-maven-compiler-plugin.version|3.5.1
+kemitix-checkstyle-ruleset.version|2.1.2
+digraph-dependency.version|0.7.0
+maven-compiler-plugin.version|3.6.0
 maven-surefire-plugin.version|2.19.1
 maven-failsafe-plugin.version|2.19.1
-maven-pmd-plugin.version|3.6
-findbugs-maven-plugin.version|3.0.4
+maven-pmd-plugin.version|3.7
+huntbugs.version|0.0.11
 jacoco-maven-plugin.version|0.7.7.201606060606
 highwheel-maven.version|1.2
 maven-project-info-reports-plugin.version|2.9
@@ -45,30 +43,25 @@ jacoco-class-line-covered-ratio|0.50
 jacoco-class-instruction-covered-ratio|0.80
 jacoco-class-missed-count-maximum|0
 
-## Maven Checkstyle Plugin
+## Checkstyle
 
-The [Maven Checkstyle Plugin](https://maven.apache.org/plugins/maven-checkstyle-plugin/)
-uses the latest version of the Checkstyle library
-([Release Notes](http://checkstyle.sourceforge.net/releasenotes.html)) and the
-[Sevntu](http://sevntu-checkstyle.github.io/sevntu.checkstyle/) library.
+The Checkstyle plugin is configured using the
+`kemitix-checkstyle-ruleset-maven-plugin`.
 
-As from version 2.0.0 you no longer provide a `checkstyle.xml` file. Any file you
-provide will be ignored unless you re-configure the maven-checkstyle-plugin yourself.
-
-The ruleset that will be used is defined in
-[kemitix-checkstyle-ruleset](https://github.com/kemitix/kemitix-checkstyle-ruleset).
-See that project's `README.md` file for details on the ruleset.
+The `kemitix-checkstyle-ruleset` provides five levels of checks. The
+default is set to `5-complexity`, the most strict. It runs during the
+`validate` phase.
 
 ### Configuration
 
-Ref [checkstyle:check](https://maven.apache.org/plugins/maven-checkstyle-plugin/check-mojo.html)
+Set the property `kemitix-checkstyle-ruleset.level` to one of the
+following values to select a less-strict ruleset:
 
-* configLocation: [checkstyle.xml](https://github.com/kemitix/kemitix-checkstyle-ruleset/blob/master/src/main/resources/net/kemitix/checkstyle.xml)
-* consoleOutput: true
-* encoding: UTF-8
-* failOnViolation: true
-* failOnError: true
-* linkXRef: true
+* 1-layout
+* 2-naming
+* 3-javadoc
+* 4-tweaks
+* 5-complexity
 
 ## Maven Compiler Plugin
 
@@ -112,20 +105,18 @@ runs the [PMD](http://pmd.sourceforge.net/) code analysis.
 
 Runs its [pmd](https://maven.apache.org/plugins/maven-pmd-plugin/pmd-mojo.html)
 and [cpd](https://maven.apache.org/plugins/maven-pmd-plugin/cpd-mojo.html) goals
-during the `verify` phase.
+during the `compile` phase.
 
 ### Configuration
 
 No configuration applied beyond the defaults.
 
-## Findbugs Maven Plugin
+## Huntbugs Maven Plugin
 
-The [Findbugs Maven Plugin](http://gleclaire.github.io/findbugs-maven-plugin/)
-runs the [Findbugs](http://findbugs.sourceforge.net/factSheet.html) code
-analysis.
+The [Huntbugs Maven Plugin](https://github.com/amaembo/huntbugs) is a
+static code analyser.
 
-Runs its [check](http://gleclaire.github.io/findbugs-maven-plugin/check-mojo.html)
-goal during the `verify` phase.
+Runs during the `compile` phase.
 
 ### Configuration
 
@@ -148,13 +139,17 @@ For each class not excluded the Instructions Covered Ration must be at least
 Excluded from analysis:
 
 * `*Test` - test classes
+* `*IT` - integration test classes
+* `*Main` - main classes
+* `*Application` - application classes
+* `*Configuration` - (Spring) configuration classes
 
 ## Maven Source Plugin
 
 The [Maven Source Plugin](https://maven.apache.org/plugins/maven-source-plugin/)
 bundles your sources into a jar file ready for deployment.
 
-Runs its [jar-no-fork](http://gleclaire.github.io/findbugs-maven-plugin/check-mojo.html)
+Runs its [jar-no-fork](https://maven.apache.org/plugins/maven-source-plugin/jar-no-fork-mojo.html)
 goal during the `verify` phase.
 
 ### Configuration
@@ -167,7 +162,7 @@ The [Maven Javadoc Plugin](https://maven.apache.org/plugins/maven-javadoc-plugin
 generates your html javadocs and bundles them into a jar file ready for
 deployment.
 
-Runs its [jar-no-fork](http://gleclaire.github.io/findbugs-maven-plugin/check-mojo.html)
+Runs its [jar](https://maven.apache.org/plugins/maven-javadoc-plugin/jar-mojo.html)
 goal during the `verify` phase.
 
 ### Configuration
@@ -201,7 +196,7 @@ classes.
 
 ### Configuration
 
-The plugin will `analyse` the project during the `verify` phase.
+The plugin will `analyse` the project during the `compile` phase.
 
 ## Digraph Dependency Plugin
 
@@ -210,9 +205,9 @@ generates a DOT file diagram showing the dependencies between packages in a proj
 
 ### Configuration
 
-The plugin will generate the `target/digraph.dot` file during the `verify` phase.
+The plugin will generate the `target/digraph.dot` file during the `validate` phase.
 
-The plugin will filter to packages within the `net.kemitix` package namespace.
+Set the `digraph-dependency.basePackage` property to the root package to graph.
 
 # Distribution Management
 
diff --git a/pom.xml b/pom.xml
index dd2b663..fa8a251 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,10 +41,16 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <kemitix.build.directory>target</kemitix.build.directory>
-        <kemitix-checkstyle-ruleset.version>2.0.4</kemitix-checkstyle-ruleset.version>
+        <kemitix-checkstyle-ruleset.version>2.1.2</kemitix-checkstyle-ruleset.version>
         <kemitix-checkstyle-ruleset.level>5-complexity</kemitix-checkstyle-ruleset.level>
 
         <lombok.version>1.16.12</lombok.version>
+        <spring-platform.version>Athens-SR2</spring-platform.version>
+        <spring-cloud.version>Camden.SR4</spring-cloud.version>
+
+        <digraph-dependency.version>0.7.0</digraph-dependency.version>
+        <digraph-dependency.basePackage>(UNSET:basePackage)</digraph-dependency.basePackage>
+
         <maven-javadoc-plugin.version>2.10.4</maven-javadoc-plugin.version>
         <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
         <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
@@ -53,7 +59,6 @@
         <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
         <maven-failsafe-plugin.version>2.19.1</maven-failsafe-plugin.version>
         <maven-pmd-plugin.version>3.7</maven-pmd-plugin.version>
-        <findbugs-maven-plugin.version>3.0.4</findbugs-maven-plugin.version>
         <huntbugs.version>0.0.11</huntbugs.version>
         <jacoco-maven-plugin.version>0.7.7.201606060606</jacoco-maven-plugin.version>
         <highwheel-maven.version>1.2</highwheel-maven.version>
@@ -79,14 +84,14 @@
             <dependency>
                 <groupId>io.spring.platform</groupId>
                 <artifactId>platform-bom</artifactId>
-                <version>Athens-SR2</version>
+                <version>${spring-platform.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
             <dependency>
                 <groupId>org.springframework.cloud</groupId>
                 <artifactId>spring-cloud-dependencies</artifactId>
-                <version>Camden.SR4</version>
+                <version>${spring-cloud.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -182,9 +187,6 @@
                 <groupId>net.kemitix</groupId>
                 <artifactId>kemitix-checkstyle-ruleset-maven-plugin</artifactId>
                 <version>${kemitix-checkstyle-ruleset.version}</version>
-                <configuration>
-                    <checkstyleVersion>7.4</checkstyleVersion>
-                </configuration>
                 <executions>
                     <execution>
                         <phase>validate</phase>
@@ -194,6 +196,22 @@
                     </execution>
                 </executions>
             </plugin><!-- kemitix-checkstyle-ruleset-maven-plugin -->
+            <plugin>
+                <groupId>net.kemitix</groupId>
+                <artifactId>digraph-dependency-maven-plugin</artifactId>
+                <version>${digraph-dependency.version}</version>
+                <configuration>
+                    <basePackage>${digraph-dependency.basePackage}</basePackage>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>validate</phase>
+                        <goals>
+                            <goal>digraph</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- digraph-dependency-maven-plugin -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
@@ -257,28 +275,13 @@
                 </executions>
             </plugin><!-- maven-pmd-plugin -->
 
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>findbugs-maven-plugin</artifactId>
-                <version>${findbugs-maven-plugin.version}</version>
-                <executions>
-                    <execution>
-                        <id>check</id>
-                        <phase>verify</phase>
-                        <goals>
-                            <goal>check</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin><!-- findbugs-maven-plugin -->
-
             <plugin>
                 <groupId>one.util</groupId>
                 <artifactId>huntbugs-maven-plugin</artifactId>
                 <version>${huntbugs.version}</version>
                 <executions>
                     <execution>
-                        <phase>verify</phase>
+                        <phase>compile</phase>
                         <goals>
                             <goal>huntbugs</goal>
                         </goals>
@@ -349,7 +352,7 @@
                 <version>${highwheel-maven.version}</version>
                 <executions>
                     <execution>
-                        <phase>validate</phase>
+                        <phase>compile</phase>
                         <goals>
                             <goal>analyse</goal>
                         </goals>
@@ -390,12 +393,6 @@
                     <linkXRef>true</linkXRef>
                 </configuration>
             </plugin><!-- maven-pmd-plugin -->
-
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>findbugs-maven-plugin</artifactId>
-                <version>${findbugs-maven-plugin.version}</version>
-            </plugin><!-- findbugs-maven-plugin -->
         </plugins>
     </reporting>