diff --git a/README.md b/README.md
index f5a9b46..52cfdce 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ Add this dependency to your project's POM:
 <dependency>
     <groupId>com.postfinancecheckout</groupId>
     <artifactId>postfinancecheckout-java-sdk</artifactId>
-    <version>2.2.27</version>
+    <version>2.2.28</version>
     <scope>compile</scope>
 </dependency>
 ```
@@ -33,7 +33,7 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "com.postfinancecheckout:postfinancecheckout-java-sdk:2.2.27"
+compile "com.postfinancecheckout:postfinancecheckout-java-sdk:2.2.28"
 ```
 
 ### Others
@@ -46,7 +46,7 @@ mvn clean package
 
 Then manually install the following JARs:
 
-* `target/postfinancecheckout-java-sdk-2.2.27.jar`
+* `target/postfinancecheckout-java-sdk-2.2.28.jar`
 * `target/lib/*.jar`
 
 ## Usage
diff --git a/build.gradle b/build.gradle
index 7a85548..0575c27 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'idea'
 apply plugin: 'eclipse'
 
 group = 'com.postfinancecheckout'
-version = '2.2.27'
+version = '2.2.28'
 
 buildscript {
     repositories {
@@ -95,11 +95,11 @@ if(hasProperty('target') && target == 'android') {
 
 ext {
     swagger_annotations_version = "1.5.17"
-    jackson_version = "2.10.1"
+    jackson_version = "2.12.2"
     google_api_client_version = "1.23.0"
     jersey_common_version = "2.29.1"
     jodatime_version = "2.9.9"
-    junit_version = "4.13.1"
+    junit_version = "4.13.2"
 }
 
 dependencies {
diff --git a/build.sbt b/build.sbt
index 8e3ff48..c803c3d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ lazy val root = (project in file(".")).
   settings(
     organization := "com.postfinancecheckout",
     name := "postfinancecheckout-java-sdk",
-    version := "2.2.27",
+    version := "2.2.28",
     scalaVersion := "2.11.4",
     scalacOptions ++= Seq("-feature"),
     javacOptions in compile ++= Seq("-Xlint:deprecation"),
@@ -12,11 +12,11 @@ lazy val root = (project in file(".")).
       "io.swagger" % "swagger-annotations" % "1.5.17",
       "com.google.api-client" % "google-api-client" % "1.23.0",
       "org.glassfish.jersey.core" % "jersey-common" % "2.29.1",
-      "com.fasterxml.jackson.core" % "jackson-core" % "2.10.1" % "compile",
-      "com.fasterxml.jackson.core" % "jackson-annotations" % "2.10.1" % "compile",
-      "com.fasterxml.jackson.core" % "jackson-databind" % "2.10.1" % "compile",
-      "com.fasterxml.jackson.datatype" % "jackson-datatype-jsr310" % "2.10.1" % "compile",
-      "junit" % "junit" % "4.13.1" % "test",
+      "com.fasterxml.jackson.core" % "jackson-core" % "2.12.2" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-annotations" % "2.12.2" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-databind" % "2.12.2" % "compile",
+      "com.fasterxml.jackson.datatype" % "jackson-datatype-jsr310" % "2.12.2" % "compile",
+      "junit" % "junit" % "4.13.2" % "test",
       "com.novocode" % "junit-interface" % "0.10" % "test"
     )
   )
diff --git a/pom.xml b/pom.xml
index 33ad9c7..fc70385 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <artifactId>postfinancecheckout-java-sdk</artifactId>
     <packaging>jar</packaging>
     <name>postfinancecheckout-java-sdk</name>
-    <version>2.2.27</version>
+    <version>2.2.28</version>
     <url>https://www.postfinance.ch/checkout</url>
     <description>The SDK for simplifying the integration with PostFinance Checkout API.</description>
     <scm>
@@ -306,8 +306,8 @@
         <swagger-annotations-version>1.5.17</swagger-annotations-version>
         <google-api-client-version>1.23.0</google-api-client-version>
         <jersey-common-version>2.29.1</jersey-common-version>
-        <jackson-version>2.10.1</jackson-version>
+        <jackson-version>2.12.2</jackson-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
-        <junit-version>4.13.1</junit-version>
+        <junit-version>4.13.2</junit-version>
     </properties>
 </project>