diff --git a/pom.xml b/pom.xml
index 01bf1721..18854056 100644
--- a/pom.xml
+++ b/pom.xml
@@ -46,38 +46,38 @@
         <dependency>
             <groupId>org.javassist</groupId>
             <artifactId>javassist</artifactId>
-            <version>3.21.0-GA</version>
+            <version>3.22.0-GA</version>
             <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
-            <version>2.8.5</version>
+            <version>2.9.5</version>
             <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.8.5</version>
+            <version>2.9.5</version>
             <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.2.4</version>
+            <version>2.8.4</version>
             <optional>true</optional>
         </dependency>
 
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
-            <version>1.20</version>
+            <version>1.21</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-generator-annprocess</artifactId>
-            <version>1.20</version>
+            <version>1.21</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -119,7 +119,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.0</version>
+                <version>3.7.0</version>
                 <configuration>
                     <source>1.6</source>
                     <target>1.6</target>
@@ -194,7 +194,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.19.1</version>
+                <version>2.21.0</version>
                 <configuration>
                     <parallel>methods</parallel>
                     <threadCount>1</threadCount>