Doesn't work on Gradle 9

Running my project on Gradle 9 leads to:

...
Caused by: java.lang.NoClassDefFoundError: groovy/util/slurpersupport/GPathResult
        at groovyx.net.http.HttpConfigs$BaseHttpConfig.configure(HttpConfigs.java:557)
        at groovyx.net.http.HttpConfigs.<clinit>(HttpConfigs.java:647)
        at groovyx.net.http.HttpObjectConfigImpl.<init>(HttpObjectConfigImpl.java:37)
        at groovyx.net.http.HttpBuilder.configure(HttpBuilder.java:151)
        at groovyx.net.http.OkHttpBuilder.configure(OkHttpBuilder.java:135)
        at groovyx.net.http.OkHttpBuilder$configure.callStatic(Unknown Source)
        at org.ysb33r.gradle.jruby.internal.core.DefaultRubyGemRestApi.getHttpBuilder(DefaultRubyGemRestApi.groovy:206)
        at org.ysb33r.gradle.jruby.internal.core.DefaultRubyGemRestApi.<init>(DefaultRubyGemRestApi.groovy:71)
...

It seems to be coming from the ruby.gems() line.

cc @ysb33r