diff --git a/releases/weekly/specs/arm64/stage1.spec b/releases/weekly/specs/arm64/stage1.spec
index 1c2eba99..8fb2fde3 100644
--- a/releases/weekly/specs/arm64/stage1.spec
+++ b/releases/weekly/specs/arm64/stage1.spec
@@ -6,6 +6,7 @@ profile: default/linux/arm64/17.0
 snapshot: current
 source_subpath: default/stage3-arm64-latest
 pkgcache_path: /var/tmp/catalyst/packages/stage1
-portage_confdir: @REPO_DIR@/releases/weekly/specs/arm64/portage-confdir
 update_seed: yes
 update_seed_command: --update --deep --jobs=5 --newuse --complete-graph @world
+portage_confdir: @REPO_DIR@/releases/weekly/portage/stages
+portage_prefix: releng
diff --git a/releases/weekly/specs/arm64/stage2.spec b/releases/weekly/specs/arm64/stage2.spec
index c974b731..b5890513 100644
--- a/releases/weekly/specs/arm64/stage2.spec
+++ b/releases/weekly/specs/arm64/stage2.spec
@@ -6,4 +6,5 @@ profile: default/linux/arm64/17.0
 snapshot: current
 source_subpath: default/stage1-arm64-2008.0
 pkgcache_path: /var/tmp/catalyst/packages/stage2
-portage_confdir: @REPO_DIR@/releases/weekly/specs/arm64/portage-confdir
+portage_confdir: @REPO_DIR@/releases/weekly/portage/stages
+portage_prefix: releng
diff --git a/releases/weekly/specs/arm64/stage3.spec b/releases/weekly/specs/arm64/stage3.spec
index d7013c57..924d89aa 100644
--- a/releases/weekly/specs/arm64/stage3.spec
+++ b/releases/weekly/specs/arm64/stage3.spec
@@ -6,4 +6,5 @@ profile: default/linux/arm64/17.0
 snapshot: current
 source_subpath: default/stage2-arm64-2008.0
 pkgcache_path: /var/tmp/catalyst/packages/stage3
-portage_confdir: @REPO_DIR@/releases/weekly/specs/arm64/portage-confdir
+portage_confdir: @REPO_DIR@/releases/weekly/portage/stages
+portage_prefix: releng