diff --git a/pom.xml b/pom.xml
index e2213b2..639ff7c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
     <packaging>war</packaging>
 
     <properties>
-        <gson.version>2.8.0</gson.version>
+        <gson.version>2.8.1</gson.version>
         <log4j.version>1.2.17</log4j.version>
         <commons-io.version>2.5</commons-io.version>
         <junit.version>4.12</junit.version>
@@ -18,7 +18,7 @@
         <powermock-api-easymock.version>1.6.6</powermock-api-easymock.version>
         <powermock-module-junit4.version>1.7.3</powermock-module-junit4.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <servlet-api>2.5</servlet-api>
+        <servlet-api>3.0.1</servlet-api>
         <maven.test.skip>false</maven.test.skip>
         <jacoco-maven-plugin.version>0.7.9</jacoco-maven-plugin.version>
         <sonar-maven-plugin.version>3.0.2</sonar-maven-plugin.version>
@@ -44,7 +44,7 @@
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
-            <version>3.0.1</version>
+            <version>${servlet-api}</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>