diff --git a/tfworker/constants.py b/tfworker/constants.py
index 90ad2be..10c4535 100644
--- a/tfworker/constants.py
+++ b/tfworker/constants.py
@@ -30,7 +30,7 @@
 TF_STATE_CACHE_NAME = "worker_state_cache.json"
 WORKER_LOCALS_FILENAME = "worker_generated_locals.tf"
 WORKER_TF_FILENAME = "worker_generated_terraform.tf"
-WORKER_TFVARS_FILENAME = "worker_generated.tfvars"
+WORKER_TFVARS_FILENAME = "worker_generated.auto.tfvars"
 RESERVED_FILES = [
     WORKER_LOCALS_FILENAME,
     WORKER_TF_FILENAME,