diff --git a/pom.xml b/pom.xml
index 6480176..723dc30 100755
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 	<description>An ANTLR4-based parser and grammar for Visual Basic 6.0</description>
 	<groupId>io.github.uwol</groupId>
 	<artifactId>proleap-vb6-parser</artifactId>
-	<version>2.3.0</version>
+	<version>3.0.0</version>
 	<packaging>jar</packaging>
 	<licenses>
 		<license>
@@ -19,8 +19,8 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<maven.compiler.source>1.8</maven.compiler.source>
-		<maven.compiler.target>1.8</maven.compiler.target>
+		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>11</maven.compiler.target>
 		<antlr.version>4.7.2</antlr.version>
 		<slf4j.version>1.7.28</slf4j.version>
 	</properties>
diff --git a/src/main/java/io/proleap/vb6/asg/runner/impl/VbParserRunnerImpl.java b/src/main/java/io/proleap/vb6/asg/runner/impl/VbParserRunnerImpl.java
index a08ed70..165c8ab 100755
--- a/src/main/java/io/proleap/vb6/asg/runner/impl/VbParserRunnerImpl.java
+++ b/src/main/java/io/proleap/vb6/asg/runner/impl/VbParserRunnerImpl.java
@@ -11,13 +11,13 @@ package io.proleap.vb6.asg.runner.impl;
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.Charset;
+import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
 
 import org.antlr.v4.runtime.CharStreams;
 import org.antlr.v4.runtime.CommonTokenStream;
-import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.FilenameUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -253,7 +253,7 @@ public class VbParserRunnerImpl implements VbParserRunner {
 
 			LOG.info("Parsing file {} with charset {}.", vbFile.getName(), charset);
 
-			final String vbCode = FileUtils.readFileToString(vbFile, charset);
+			final String vbCode = Files.readString(vbFile.toPath(), charset);
 
 			// determine the module name
 			final String moduleName = getModuleName(vbFile);
diff --git a/src/test/java/io/proleap/vb6/runner/impl/VbParseTestRunnerImpl.java b/src/test/java/io/proleap/vb6/runner/impl/VbParseTestRunnerImpl.java
index 72fb1ce..9cf7b5d 100644
--- a/src/test/java/io/proleap/vb6/runner/impl/VbParseTestRunnerImpl.java
+++ b/src/test/java/io/proleap/vb6/runner/impl/VbParseTestRunnerImpl.java
@@ -16,11 +16,11 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 
 import org.antlr.v4.runtime.CharStreams;
 import org.antlr.v4.runtime.CommonTokenStream;
 import org.antlr.v4.runtime.tree.Trees;
-import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang.StringUtils;
 import org.slf4j.Logger;
@@ -56,7 +56,7 @@ public class VbParseTestRunnerImpl implements VbParseTestRunner {
 	protected void doCompareParseTree(final File treeFile, final StartRuleContext startRule,
 			final VisualBasic6Parser parser) throws IOException {
 
-		final String treeFileData = FileUtils.readFileToString(treeFile, StandardCharsets.UTF_8);
+		final String treeFileData = Files.readString(treeFile.toPath(), StandardCharsets.UTF_8);
 
 		if (!StringUtils.isEmpty(treeFileData)) {
 			LOG.info("Comparing parse tree with file {}.", treeFile.getName());