diff --git a/pom.xml b/pom.xml
index 822a9fea..a1d01349 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,11 +23,10 @@ under the License.
   <parent>
     <groupId>org.apache.maven.extensions</groupId>
     <artifactId>maven-extensions</artifactId>
-    <version>41</version>
+    <version>43</version>
     <relativePath />
   </parent>
 
-  <groupId>org.apache.maven.extensions</groupId>
   <artifactId>maven-build-cache-extension</artifactId>
   <version>1.2.1-SNAPSHOT</version>
   <packaging>jar</packaging>
diff --git a/src/main/java/org/apache/maven/buildcache/CacheControllerImpl.java b/src/main/java/org/apache/maven/buildcache/CacheControllerImpl.java
index 11cec501..45d9996c 100644
--- a/src/main/java/org/apache/maven/buildcache/CacheControllerImpl.java
+++ b/src/main/java/org/apache/maven/buildcache/CacheControllerImpl.java
@@ -141,6 +141,7 @@ public class CacheControllerImpl implements CacheController {
 
     private int attachedResourceCounter = 0;
 
+    @SuppressWarnings("ParameterNumber")
     @Inject
     public CacheControllerImpl(
             MavenProjectHelper projectHelper,
diff --git a/src/main/java/org/apache/maven/buildcache/checksum/MavenProjectInput.java b/src/main/java/org/apache/maven/buildcache/checksum/MavenProjectInput.java
index e196eddd..f7e06aea 100644
--- a/src/main/java/org/apache/maven/buildcache/checksum/MavenProjectInput.java
+++ b/src/main/java/org/apache/maven/buildcache/checksum/MavenProjectInput.java
@@ -693,6 +693,7 @@ public Artifact createPluginArtifact(Plugin plugin) {
                 false);
     }
 
+    @SuppressWarnings("checkstyle:parameternumber")
     private Artifact createArtifact(
             String groupId,
             String artifactId,