diff --git a/build.gradle b/build.gradle
index dfd2c4d..b1a93e8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,8 +6,8 @@ buildscript {
 }
 
 plugins {
-    id 'org.asciidoctor.convert' version '1.5.3'
-    id 'com.github.jruby-gradle.base' version '1.4.0'
+    id 'org.asciidoctor.convert' version '1.5.8.1'
+    id 'com.github.jruby-gradle.base' version '1.5.0'
 }
 
 apply plugin: 'com.github.jruby-gradle.base'