diff --git a/lib/manager/gradle/gradle-updates-report.ts b/lib/manager/gradle/gradle-updates-report.ts
index a663fbe9ce46c995713af32988e83fd3b44832bd..ebf1dd81a8976b91da3b4c5cdd3641cdf119f5c8 100644
--- a/lib/manager/gradle/gradle-updates-report.ts
+++ b/lib/manager/gradle/gradle-updates-report.ts
@@ -41,7 +41,7 @@ allprojects {
     doLast {
         def project = ['project': project.name]
         output << project
-        def repos = (repositories + settings.pluginManagement.repositories)
+        def repos = (repositories + buildscript.repositories + settings.pluginManagement.repositories)
            .collect { "$it.url" }
            .findAll { !it.startsWith('file:') }
            .unique()