diff --git a/.github/workflows/continuous-integration.yaml b/.github/workflows/continuous-integration.yaml
index db4e636..ca04238 100644
--- a/.github/workflows/continuous-integration.yaml
+++ b/.github/workflows/continuous-integration.yaml
@@ -16,7 +16,6 @@ jobs:
       max-parallel: 2
       matrix:
         java:
-          - '8'
           - '11'
           - '17'
         os:
diff --git a/build.gradle b/build.gradle
index 8b13011..338a947 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,13 +12,20 @@ buildscript {
     mavenCentral()
     maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
   }
+  dependencies {
+    classpath "biz.aQute.bnd:biz.aQute.bnd.gradle:5.3.0"
+    classpath("com.github.jruby-gradle:jruby-gradle-plugin:2.0.1") {
+      exclude module: 'grolifant'
+      exclude module: 'okhttp-digest'
+    }
+    classpath 'org.ysb33r.gradle:grolifant:0.17.0'
+  }
 }
 
 // modern plugins config
 plugins {
   id "signing"
-  id "io.github.gradle-nexus.publish-plugin" version "1.1.0"
-  id 'com.github.jruby-gradle.base' version '2.0.0'
+  id "io.github.gradle-nexus.publish-plugin" version "1.3.0"
 }