adjust dev site
diff --git a/site/src/site/sitemap-dev.groovy b/site/src/site/sitemap-dev.groovy
index 1c7a697..7641fad 100644
--- a/site/src/site/sitemap-dev.groovy
+++ b/site/src/site/sitemap-dev.groovy
@@ -79,8 +79,13 @@
             a(href: 'versioning.html', 'version')
             yield ' of Groovy designed for JDK8+ and with the new Parrot parser enabled by default. Pre-stable versions are available:'
         }
+        version('3.0.0-rc-1') {
+            stable false
+//            windowsInstaller 'https://dl.bintray.com/groovy/Distributions/groovy-3.0.0-rc-1-installer.exe'
+        }
         version('3.0.0-beta-3') {
             stable false
+            archive true
             windowsInstaller 'https://dl.bintray.com/groovy/Distributions/groovy-3.0.0-beta-3-installer.exe'
         }
     }