diff --git a/buildSrc/version.properties b/buildSrc/version.properties
index baa8590bdec..34c266913d0 100644
--- a/buildSrc/version.properties
+++ b/buildSrc/version.properties
@@ -6,6 +6,8 @@ spatial4j         = 0.7
 jts               = 1.15.0
 jackson           = 2.8.11
 snakeyaml         = 1.17
+icu4j             = 62.1
+supercsv          = 2.4.0
 # when updating log4j, please update also docs/java-api/index.asciidoc
 log4j             = 2.11.1
 slf4j             = 1.6.2
diff --git a/plugins/analysis-icu/build.gradle b/plugins/analysis-icu/build.gradle
index ad5a7b7c57b..1883e3bf1b9 100644
--- a/plugins/analysis-icu/build.gradle
+++ b/plugins/analysis-icu/build.gradle
@@ -30,9 +30,9 @@ forbiddenApis {
 
 dependencies {
   compile "org.apache.lucene:lucene-analyzers-icu:${versions.lucene}"
-  compile 'com.ibm.icu:icu4j:62.1'
+  compile "com.ibm.icu:icu4j:${versions.icu4j}"
 }
 
 dependencyLicenses {
   mapping from: /lucene-.*/, to: 'lucene'
-}
\ No newline at end of file
+}
diff --git a/x-pack/plugin/ml/build.gradle b/x-pack/plugin/ml/build.gradle
index a6730161337..3602e1b359e 100644
--- a/x-pack/plugin/ml/build.gradle
+++ b/x-pack/plugin/ml/build.gradle
@@ -47,7 +47,7 @@ dependencies {
 
     // ml deps
     compile project(':libs:grok')
-    compile 'net.sf.supercsv:super-csv:2.4.0'
+    compile "net.sf.supercsv:super-csv:${versions.supercsv}"
     nativeBundle "org.elasticsearch.ml:ml-cpp:${project.version}@zip"
     testCompile 'org.ini4j:ini4j:0.5.2'
 }