diff --git a/antlr4-wrapper.xml b/antlr4-wrapper.xml
index 7a82734022..c3e4527f9f 100644
--- a/antlr4-wrapper.xml
+++ b/antlr4-wrapper.xml
@@ -11,10 +11,11 @@
         - root-node-name: name of the root node without prefix (eg "TopLevel"), will be made to implement RootNode
 
         See AntlrGeneratedParserBase
-
 -->
+    <taskdef resource="net/sf/antcontrib/antcontrib.properties" />
 
     <property name="target-package-dir" value="${antlr4.outputDirectory}/net/sourceforge/pmd/lang/${lang-id}/ast"/>
+    <property name="stamp-file" value="${project.build.directory}/last-generated-timestamp" />
 
 
     <property name="lang-ast-package" value="net.sourceforge.pmd.lang.${lang-id}.ast" />
@@ -32,14 +33,100 @@
     <property name="base-visitor-file" value="${target-package-dir}/${base-visitor-name}.java"/>
 
     <property name="listener-name" value="${lang-name}Listener"/>
-    <property name="listener-file" value="${target-package-dir}/${visitor-name}.java"/>
+    <property name="listener-file" value="${target-package-dir}/${listener-name}.java"/>
 
     <property name="base-listener-name" value="${lang-name}BaseListener"/>
-    <property name="base-listener-file" value="${target-package-dir}/${base-visitor-name}.java"/>
+    <property name="base-listener-file" value="${target-package-dir}/${base-listener-name}.java"/>
 
     <property name="node-itf-name" value="${lang-name}Node"/>
     <property name="base-class-name" value="Abstract${lang-name}Node"/>
 
+    <property name="lexer-name" value="${lang-name}Lexer"/>
+    <property name="lexer-file" value="${target-package-dir}/${lexer-name}.java"/>
+
+    <target name="check-up-to-date"
+            description="Checks the input files are up to date">
+
+        <uptodate property="processing-not-required" targetfile="${stamp-file}">
+            <srcfiles dir="${target-package-dir}" includes="*.java" />
+            <srcfiles file="${ant.file}" />
+        </uptodate>
+        <echo message="Up-to-date check: processing-not-required=${processing-not-required}" />
+    </target>
+
+    <target name="update-stamp-file" unless="processing-not-required">
+        <touch file="${stamp-file}" />
+    </target>
+
+    <target name="annotate-classes" description="Adds the @Generated annotation to all classes"
+            unless="processing-not-required">
+        <if>
+            <available file="${parser-file}"/>
+            <then>
+                <replace file="${parser-file}"
+                         token="public class ${parser-name}"
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public class ${parser-name}'/>
+
+                <!-- Parse tree classes for each element -->
+                <replace file="${parser-file}"
+                         token="public static class "
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public static class '/>
+            </then>
+        </if>
+
+        <if>
+            <available file="${visitor-file}"/>
+            <then>
+                <replace file="${visitor-file}"
+                         token="public interface ${visitor-name}"
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public interface ${visitor-name}'/>
+            </then>
+        </if>
+
+        <if>
+            <available file="${base-visitor-file}"/>
+            <then>
+                <replace file="${base-visitor-file}"
+                         token="public class ${base-visitor-name}"
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public class ${base-visitor-name}'/>
+            </then>
+        </if>
+
+        <if>
+            <available file="${listener-file}"/>
+            <then>
+                <replace file="${listener-file}"
+                         token="public interface ${listener-name}"
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public interface ${listener-name}'/>
+            </then>
+        </if>
+
+        <if>
+            <available file="${base-listener-file}"/>
+            <then>
+                <replace file="${base-listener-file}"
+                         token="public class ${base-listener-name}"
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public class ${base-listener-name}'/>
+            </then>
+        </if>
+
+        <if>
+            <available file="${lexer-file}"/>
+            <then>
+                <replace file="${lexer-file}"
+                         token="public class ${lexer-name}"
+                         value='@net.sourceforge.pmd.annotation.Generated("org.antlr.v4.Tool")${line.separator}
+public class ${lexer-name}'/>
+            </then>
+        </if>
+    </target>
+
     <condition property="rename-parser">
         <and>
             <not>
@@ -72,7 +159,9 @@
               tofile="${parser-file}"/>
     </target>
 
-    <target name="cpd-language" description="Adapt Antlr sources for CPD-only languages">
+    <target name="cpd-language" depends="check-up-to-date, annotate-classes, cpd-language-processing, update-stamp-file"/>
+    <target name="cpd-language-processing" description="Adapt Antlr sources for CPD-only languages"
+            unless="processing-not-required">
         <!-- We only need the Lexer file. -->
         <delete file="${parser-file}"/>
         <delete>
@@ -83,7 +172,9 @@
         </delete>
     </target>
 
-    <target name="pmd-language" description="Adapt Antlr sources for PMD languages" depends="rename-parser">
+    <target name="pmd-language" depends="check-up-to-date, annotate-classes, pmd-language-processing, update-stamp-file"/>
+    <target name="pmd-language-processing" description="Adapt Antlr sources for PMD languages" depends="rename-parser"
+            unless="processing-not-required">
 
         <!-- Adapt parser. -->
         <replace file="${parser-file}">
diff --git a/docs/pages/release_notes.md b/docs/pages/release_notes.md
index e6c419b789..c80d7c0cc2 100644
--- a/docs/pages/release_notes.md
+++ b/docs/pages/release_notes.md
@@ -52,6 +52,7 @@ The old rule names still work but are deprecated.
 * [#4965](https://github.com/pmd/pmd/pull/4965): \[java] Rename JUnit rules with overly restrictive names - [Juan Martín Sotuyo Dodero](https://github.com/jsotuyod) (@jsotuyod)
 * [#5225](https://github.com/pmd/pmd/pull/5225): \[java] Fix #5067: CloseResource: False positive for FileSystems.getDefault() - [Lukas Gräf](https://github.com/lukasgraef) (@lukasgraef)
 * [#5241](https://github.com/pmd/pmd/pull/5241): Ignore javacc code in coverage report - [Juan Martín Sotuyo Dodero](https://github.com/jsotuyod) (@jsotuyod)
+* [#5258](https://github.com/pmd/pmd/pull/5258): Ignore generated antlr classes in coverage reports - [Juan Martín Sotuyo Dodero](https://github.com/jsotuyod) (@jsotuyod)
 * [#5264](https://github.com/pmd/pmd/pull/5264): \[java] Fix NPE with empty pattern list - [Clément Fournier](https://github.com/oowekyala) (@oowekyala)
 * [#5269](https://github.com/pmd/pmd/pull/5269): \[java] Fix #5253: Support Boolean wrapper class for BooleanGetMethodName rule - [Aryant Tripathi](https://github.com/Aryant-Tripathi) (@Aryant-Tripathi)
 
diff --git a/pom.xml b/pom.xml
index 9d4e2061ab..67269e26ad 100644
--- a/pom.xml
+++ b/pom.xml
@@ -122,6 +122,8 @@
         <javacc.outputDirectory>${project.build.directory}/generated-sources/javacc</javacc.outputDirectory>
         <javacc.ant.wrapper>${project.basedir}/../javacc-wrapper.xml</javacc.ant.wrapper>
 
+        <ant-contrib.version>1.0b3</ant-contrib.version>
+
         <antlr4.outputDirectory>${project.build.directory}/generated-sources/antlr4</antlr4.outputDirectory>
         <antlr4.ant.wrapper>${project.basedir}/../antlr4-wrapper.xml</antlr4.ant.wrapper>
 
@@ -167,6 +169,11 @@
                             <artifactId>ant</artifactId>
                             <version>${ant.version}</version>
                         </dependency>
+                        <dependency>
+                            <groupId>ant-contrib</groupId>
+                            <artifactId>ant-contrib</artifactId>
+                            <version>${ant-contrib.version}</version>
+                        </dependency>
                     </dependencies>
                 </plugin>
                 <plugin>