diff --git a/README.md b/README.md
index ffccaac..0471a1f 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,11 @@ Version History
 ### 0.5.0 (not yet released)
 
 * jdbc-copy: New tool (work in progress)
-* Use groovy-2.2.1 to compile all groovy scripts
+
+* wikitext: New tool
+
+* Use groovy-2.3.0 to compile all groovy scripts
+
 * gradlew: Use version 1.12 (used to be 1.10, 1.11)
 
 ### 0.4.0 - 2014-02-08
diff --git a/build.gradle b/build.gradle
index 3975d58..7152ab6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -54,6 +54,10 @@ configure(subprojects) { project ->
         }
 }
 
+configure(allprojects) { project ->
+  ext.groovyVersion = '2.3.0'
+}
+
 htmlDependencyReport {
   projects = project.allprojects
 }
diff --git a/common.gradle b/common.gradle
index eea7401..545bcc2 100644
--- a/common.gradle
+++ b/common.gradle
@@ -63,4 +63,4 @@ task(jarsToLib) {
     }
   }
 }
-*/
\ No newline at end of file
+*/
diff --git a/gradle-local-repository/build.gradle b/gradle-local-repository/build.gradle
index 4ae49da..1602284 100644
--- a/gradle-local-repository/build.gradle
+++ b/gradle-local-repository/build.gradle
@@ -7,7 +7,7 @@ mainClassName='copyArtifacts'; // for 'gradle run' and MANIFEST.MF
 ext.groovyScriptName="${projectDir}/scripts/copyArtifacts.groovy";
 
 dependencies {
-  compile 'org.codehaus.groovy:groovy-all:2.2.1'
+  compile "org.codehaus.groovy:groovy-all:${groovyVersion}"
   testCompile 'junit:junit:4.11'
   runtime "commons-cli:commons-cli:1.2"
   runtime 'org.apache.ant:ant:1.9.2'
diff --git a/i18nbinder/build.gradle b/i18nbinder/build.gradle
index 350804c..196c5b5 100644
--- a/i18nbinder/build.gradle
+++ b/i18nbinder/build.gradle
@@ -10,7 +10,7 @@ mainClassName='i18nbinder'; // for 'gradle run' and MANIFEST.MF
 ext.groovyScriptName="${projectDir}/scripts/i18nbinder.groovy";
 
 dependencies {
-    compile 'org.codehaus.groovy:groovy-all:2.2.1'
+    compile "org.codehaus.groovy:groovy-all:${groovyVersion}"
     compile 'org.omnaest.i18nbinder:i18nbinder-ant:0.1.17'
     runtime "commons-cli:commons-cli:1.2"
     runtime 'org.apache.ant:ant:1.9.3'
diff --git a/jdbc-copy/build.gradle b/jdbc-copy/build.gradle
index ca90dc2..55c66ef 100644
--- a/jdbc-copy/build.gradle
+++ b/jdbc-copy/build.gradle
@@ -7,7 +7,7 @@ mainClassName='jdbcCopy'; // for 'gradle run' and MANIFEST.MF
 ext.groovyScriptName="${projectDir}/scripts/jdbcCopy.groovy";
 
 dependencies {
-  compile 'org.codehaus.groovy:groovy-all:2.2.2'
+  compile "org.codehaus.groovy:groovy-all:${groovyVersion}"
   testCompile 'junit:junit:4.11'
   runtime "commons-cli:commons-cli:1.2"
   runtime 'org.apache.ant:ant:1.9.3'
diff --git a/xmldiff/build.gradle b/xmldiff/build.gradle
index 657f82f..5821f7b 100644
--- a/xmldiff/build.gradle
+++ b/xmldiff/build.gradle
@@ -7,7 +7,7 @@ mainClassName='org.uli.xmldiff.XmlDiff'; // for 'gradle run' and MANIFEST.MF
 ext.groovyScriptName="${projectDir}/scripts/xmldiff.groovy";
 
 dependencies {
-  //compile 'org.codehaus.groovy:groovy-all:2.2.1'
+  //compile "org.codehaus.groovy:groovy-all:${groovyVersion}"
   compile 'xmlunit:xmlunit:1.5'
   testCompile 'junit:junit:4.11'
   //runtime "commons-cli:commons-cli:1.2"