diff --git a/taskcluster/ci/legacy/tasks/builds/dbg_linux64_asan.yml b/taskcluster/ci/legacy/tasks/builds/dbg_linux64_asan.yml
index eb47935b89dd..c1fe2c62e016 100644
--- a/taskcluster/ci/legacy/tasks/builds/dbg_linux64_asan.yml
+++ b/taskcluster/ci/legacy/tasks/builds/dbg_linux64_asan.yml
@@ -12,7 +12,7 @@ task:
     - 'index.buildbot.branches.{{project}}.linux64-asan'
     - 'index.buildbot.revisions.{{head_rev}}.{{project}}.linux64-asan'
 
-  workerType: dbg-linux64
+  workerType: gecko-{{level}}-b-linux
 
   payload:
     env:
diff --git a/taskcluster/ci/legacy/tasks/builds/opt_linux64_asan.yml b/taskcluster/ci/legacy/tasks/builds/opt_linux64_asan.yml
index 6d9f37775b36..11881e4b6a58 100644
--- a/taskcluster/ci/legacy/tasks/builds/opt_linux64_asan.yml
+++ b/taskcluster/ci/legacy/tasks/builds/opt_linux64_asan.yml
@@ -12,7 +12,7 @@ task:
     - 'index.buildbot.branches.{{project}}.linux64-asan'
     - 'index.buildbot.revisions.{{head_rev}}.{{project}}.linux64-asan'
 
-  workerType: opt-linux64
+  workerType: gecko-{{level}}-b-linux
 
   payload:
     env: