diff --git a/DependencyUpdateSearch_Rules.xml b/DependencyUpdateSearch_Rules.xml
new file mode 100644
index 00000000..77cc7db8
--- /dev/null
+++ b/DependencyUpdateSearch_Rules.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ruleset xmlns="http://mojo.codehaus.org/versions-maven-plugin/rule/2.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" comparisonMethod="maven" xsi:schemaLocation="http://mojo.codehaus.org/versions-maven-plugin/rule/2.0.0 http://mojo.codehaus.org/versions-maven-plugin/xsd/rule-2.0.0.xsd">
+    <ignoreVersions>
+        <!-- Ignore Alpha's, Beta's, release candidates and milestones -->
+        <ignoreVersion type="regex">(?i).*Alpha(?:-?\d+)?</ignoreVersion>
+        <ignoreVersion type="regex">(?i).*a(?:-?\d+)?</ignoreVersion>
+        <ignoreVersion type="regex">(?i).*Beta(?:-?\d+)?</ignoreVersion>
+        <ignoreVersion type="regex">(?i).*-B(?:-?\d+)?</ignoreVersion>
+        <ignoreVersion type="regex">(?i).*RC(?:-?\d+)?</ignoreVersion>
+        <ignoreVersion type="regex">(?i).*CR(?:-?\d+)?</ignoreVersion>
+        <ignoreVersion type="regex">(?i).*M(?:-?\d+)?</ignoreVersion>
+    </ignoreVersions>
+    <rules>
+    </rules>
+</ruleset>
diff --git a/pom.xml b/pom.xml
index fe0bd30c..c0824ddf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -40,7 +40,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -52,38 +52,38 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
-            <version>2.9.5</version>
+            <version>2.13.3</version>
             <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.9.5</version>
+            <version>2.13.3</version>
             <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.3</version>
+            <version>2.9.1</version>
             <optional>true</optional>
         </dependency>
 
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
-            <version>1.20</version>
+            <version>1.35</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-generator-annprocess</artifactId>
-            <version>1.20</version>
+            <version>1.35</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
-            <version>3.5</version>
+            <version>3.12.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -125,16 +125,18 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.7.0</version>
+                <version>3.10.1</version>
                 <configuration>
-                    <release>16</release>
+                    <release>17</release>
+                    <source>17</source>
+					<target>17</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>3.0.1</version>
+                <version>3.2.1</version>
                 <executions>
                     <execution>
                         <id>attach-sources</id>
@@ -147,7 +149,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.0.0</version>
+                <version>3.4.0</version>
                 <executions>
                     <execution>
                         <id>attach-javadocs</id>
@@ -177,7 +179,7 @@
             <plugin>
                 <groupId>org.sonatype.plugins</groupId>
                 <artifactId>nexus-staging-maven-plugin</artifactId>
-                <version>1.6.8</version>
+                <version>1.6.13</version>
                 <extensions>true</extensions>
                 <configuration>
                     <serverId>ossrh</serverId>
@@ -199,7 +201,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.21.0</version>
+                <version>2.20</version> <!-- note: 2.20.1 to 2.22.2 crash during tests -->
                 <configuration>
                     <testFailureIgnore>true</testFailureIgnore>
                     <parallel>methods</parallel>
@@ -215,6 +217,46 @@
                     </includes>
                 </configuration>
             </plugin>
+        
+	        <plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>versions-maven-plugin</artifactId>
+				<version>2.11.0</version>
+				<configuration>
+					<rulesUri>file:///${project.basedir}/DependencyUpdateSearch_Rules.xml</rulesUri>
+				</configuration>
+				<executions>
+					<execution>
+						<phase>verify</phase>
+						<goals>
+							<goal>display-dependency-updates</goal>
+							<goal>display-plugin-updates</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-enforcer-plugin</artifactId>
+				<version>3.1.0</version>
+				<executions>
+					<execution>
+						<id>enforce-maven</id>
+						<goals>
+							<goal>enforce</goal>
+						</goals>
+						<configuration>
+							<rules>
+								<requireMavenVersion>
+									<version>[3.3.2,)</version>
+								</requireMavenVersion>
+							</rules>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+			
         </plugins>
     </build>
 
diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
new file mode 100644
index 00000000..57b5d2c8
--- /dev/null
+++ b/src/main/java/module-info.java
@@ -0,0 +1,38 @@
+open module com.jsoniter {
+	
+	exports com.jsoniter;
+
+	exports com.jsoniter.fuzzy;
+
+	exports com.jsoniter.static_codegen;
+
+	exports com.jsoniter.extra;
+
+	exports com.jsoniter.output;
+
+	exports com.jsoniter.annotation;
+
+	exports com.jsoniter.spi;
+
+	exports com.jsoniter.any;
+
+
+	/** static, because marked as optional in pom.xml*/
+	requires static javassist;
+
+	/** static, because marked as optional in pom.xml*/
+	requires static com.fasterxml.jackson.core;
+
+	/** static, because marked as optional in pom.xml*/
+	requires static com.fasterxml.jackson.annotation;
+
+	/** static, because marked as optional in pom.xml*/
+	requires static com.fasterxml.jackson.databind;
+	
+	/** static, because marked as optional in pom.xml*/
+	requires static com.google.gson;
+
+	/** static, because only used in testing */
+	requires static java.desktop;
+
+}
\ No newline at end of file
diff --git a/src/test/java/com/jsoniter/output/TestNested.java b/src/test/java/com/jsoniter/output/TestNested.java
index 00fd8d6d..e3750c66 100644
--- a/src/test/java/com/jsoniter/output/TestNested.java
+++ b/src/test/java/com/jsoniter/output/TestNested.java
@@ -1,16 +1,12 @@
 package com.jsoniter.output;
 
+import java.io.*;
+import java.util.*;
+
 import com.jsoniter.annotation.JsonProperty;
-import com.jsoniter.spi.JsoniterSpi;
-import com.jsoniter.spi.TypeLiteral;
-import junit.framework.TestCase;
+import com.jsoniter.spi.*;
 
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import junit.framework.TestCase;
 
 public class TestNested extends TestCase {
 
@@ -45,7 +41,7 @@ public void test_collection_of_objects() throws IOException {
         obj1.field1 = "1";
         obj1.field2 = "2";
         String output = JsonStream.serialize(new TypeLiteral<List<TestObject1>>() {
-        }, new ArrayList() {{
+        }, new ArrayList<>() {{
             add(obj1);
         }});
         assertTrue(output.contains("field1"));
@@ -92,7 +88,7 @@ public void test_map_of_objects() throws IOException {
             obj1.field1 = "1";
             obj1.field2 = "2";
             stream.writeVal(new TypeLiteral<Map<String, TestObject1>>() {
-            }, new HashMap() {{
+            }, new HashMap<>() {{
                 put("hello", obj1);
             }});
             stream.close();