diff --git a/build.gradle b/build.gradle
index c1118be..33c4c1d 100755
--- a/build.gradle
+++ b/build.gradle
@@ -16,7 +16,7 @@ repositories {
 dependencies {
   // mandatory dependencies for using Spock
   compile "org.codehaus.groovy:groovy-all:2.3.6"
-  testCompile "org.spockframework:spock-core:1.0-groovy-2.0-SNAPSHOT"
+  testCompile "org.spockframework:spock-core:1.0-groovy-2.3-SNAPSHOT"
 
   // optional dependencies for using Spock
   testCompile "org.hamcrest:hamcrest-core:1.3" // only necessary if Hamcrest matchers are used
diff --git a/build.xml b/build.xml
index be1e133..a2fb963 100644
--- a/build.xml
+++ b/build.xml
@@ -27,23 +27,23 @@
       <dependency
         groupId="org.spockframework"
         artifactId="spock-core"
-        version="1.0-groovy-2.0-SNAPSHOT" />
+        version="1.0-groovy-2.3-SNAPSHOT" />
 <!-- Optional dependencies for using Spock -->
       <!-- enables mocking of classes (in addition to interfaces) -->
       <dependency 
         groupId="cglib"
         artifactId="cglib-nodep"
-        version="2.2.2" />
+        version="3.1" />
       <!-- enables mocking of classes without parameterless constructor (together with CGLIB) -->
       <dependency
         groupId="org.objenesis"
         artifactId="objenesis"
-        version="1.2" />
+        version="2.1" />
       <!-- only required if Spock's Ant selector is used, which finds spec classes regardless of their name -->
       <dependency
         groupId="org.ow2.asm"
         artifactId="asm"
-        version="4.0" />
+        version="5.0.3" />
       <!-- only required if Hamcrest matchers are used -->
       <dependency
           groupId="org.hamcrest"
@@ -53,7 +53,7 @@
       <dependency
         groupId="com.h2database"
         artifactId="h2"
-        version="1.3.168" />
+        version="1.4.181" />
       <remoteRepository
         id="maven-central"
         url="http://repo1.maven.org/maven2/" />
diff --git a/pom.xml b/pom.xml
index 767933b..b157ad8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -46,7 +46,7 @@
           <dependency>
             <groupId>org.codehaus.groovy</groupId>
             <artifactId>groovy-all</artifactId>
-            <version>2.1.5</version>
+            <version>2.3.6</version>
           </dependency>
         </dependencies>
       </plugin>
@@ -78,20 +78,20 @@
     <dependency>
       <groupId>org.spockframework</groupId>
       <artifactId>spock-core</artifactId>
-      <version>1.0-groovy-2.0-SNAPSHOT</version>
+      <version>1.0-groovy-2.3-SNAPSHOT</version>
       <scope>test</scope>
     </dependency>
     <!-- Optional dependencies for using Spock -->
     <dependency> <!-- enables mocking of classes (in addition to interfaces) -->
       <groupId>cglib</groupId>
       <artifactId>cglib-nodep</artifactId>
-      <version>2.2.2</version>
+      <version>3.1</version>
       <scope>test</scope>
     </dependency>
     <dependency> <!-- enables mocking of classes without default constructor (together with CGLIB) -->
       <groupId>org.objenesis</groupId>
       <artifactId>objenesis</artifactId>
-      <version>1.2</version>
+      <version>2.1</version>
       <scope>test</scope>
     </dependency>
     <dependency> <!-- only necessary if Hamcrest matchers are used -->
@@ -104,7 +104,7 @@
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.3.168</version>
+      <version>1.4.181</version>
     </dependency>
   </dependencies>
 
@@ -130,7 +130,7 @@
     </pluginRepository>
   </pluginRepositories>
 
-  <!-- Only required for spock-example build -->
+  <!-- Only required by spock-example build -->
   <distributionManagement>
     <repository>
       <id>foo</id>