diff --git a/build.gradle b/build.gradle
index 0acde2a24..fd81c835a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -175,7 +175,7 @@ subprojects { project ->
     dependencies {
         documentation "org.fusesource.jansi:jansi:$jansiVersion"
         documentation "org.codehaus.groovy:groovy-dateutil:$groovyVersion"
-        documentation 'info.picocli:picocli:3.8.2'
+        documentation 'info.picocli:picocli:4.3.2'
 
         testCompile "org.codehaus.groovy:groovy-test:$groovyVersion"
         testCompile "org.spockframework:spock-core:$spockVersion", {