--- a/mobile/android/config/tooltool-manifests/android/releng.manifest
+++ b/mobile/android/config/tooltool-manifests/android/releng.manifest
@@ -82,10 +82,18 @@
 {
 "version": "rust stdlib repack 1.8.0 (db2939409 2016-04-11)",
 "size": 17874585,
 "visibility": "public",
 "digest": "bea72d352a70411240d95c7ab33e97d85be9cf0548807968dc721b14d816c70f4fd77a0ca1b43b851772ec06c0c1395b474ad342d506f8987fdbb070393c81f6",
 "algorithm": "sha512",
 "filename": "rust-std-lib.tar.bz2",
 "unpack": true
+},
+{
+"algorithm": "sha512",
+"visibility": "public",
+"filename": "dotgradle.tar.xz",
+"unpack": true,
+"digest": "9f082ccd71ad18991eb71fcad355c6990f50a72a09ab9b79696521485656083a72faf5a8d4714de9c4b901ee2319b6786a51964846bb7075061642a8505501c2",
+"size": 512
 }
 ]

--- a/taskcluster/ci/legacy/tasks/builds/android_api_15_gradle.yml
+++ b/taskcluster/ci/legacy/tasks/builds/android_api_15_gradle.yml
@@ -35,16 +35,17 @@ task:
       MOZHARNESS_CONFIG: >
           builds/releng_base_android_64_builds.py
           disable_signing.py
           platform_supports_post_upload_to_latest.py
       MOZHARNESS_ACTIONS: "get-secrets build multi-l10n update"
       MH_CUSTOM_BUILD_VARIANT_CFG: api-15-gradle
       MH_BRANCH: {{project}}
       MH_BUILD_POOL: taskcluster
+      GRADLE_USER_HOME: '/home/worker/workspace/build/src/dotgradle'
 
     command: ["/bin/bash", "bin/build.sh"]
 
   extra:
     treeherderEnv:
       - production
       - staging
     treeherder: