diff --git a/metadata/de.spiritcroc.riotx.yml b/metadata/de.spiritcroc.riotx.yml
index 59ac5e6ec5..71da234232 100644
--- a/metadata/de.spiritcroc.riotx.yml
+++ b/metadata/de.spiritcroc.riotx.yml
@@ -152,6 +152,7 @@ Builds:
     srclibs:
       - piasy@v1.6.2
     prebuild:
+      - sed -i -e 's/gradle-6.7/gradle-6.6.1/' ../gradle/wrapper/gradle-wrapper.properties
       - tac ../build.gradle | awk '/dl.bintray.com\/piasy\/maven/{getline;$0="mavenLocal
         {"}{print $0}' | tac > ../build.gradle.new
       - mv ../build.gradle.new ../build.gradle