diff --git a/metadata/org.olpc_france.sugarizer.yml b/metadata/org.olpc_france.sugarizer.yml
index 0601e5c013..5eee32361a 100644
--- a/metadata/org.olpc_france.sugarizer.yml
+++ b/metadata/org.olpc_france.sugarizer.yml
@@ -111,6 +111,10 @@ Builds:
     subdir: app
     gradle:
       - yes
+    prebuild:
+      - sdkmanager 'build-tools;31.0.0' 'build-tools;30.0.3'
+      - cp $$SDK$$/build-tools/30.0.3/lib/dx.jar $$SDK$$/build-tools/31.0.0/lib/dx.jar
+      - cp $$SDK$$/build-tools/30.0.3/dx $$SDK$$/build-tools/31.0.0/dx
 
 AutoUpdateMode: Version
 UpdateCheckMode: Tags