diff --git a/pkgs/clan-cli/clan_lib/flake/flake.py b/pkgs/clan-cli/clan_lib/flake/flake.py
index cd9407460..bef8c1c38 100644
--- a/pkgs/clan-cli/clan_lib/flake/flake.py
+++ b/pkgs/clan-cli/clan_lib/flake/flake.py
@@ -659,6 +659,8 @@ class Flake:
             nix_metadata,
         )
 
+        log.debug(f"Invalidating cache for {self.identifier}")
+
         self.prefetch()
 
         self._cache = FlakeCache()
diff --git a/pkgs/generate-test-vars/generate_test_vars/cli.py b/pkgs/generate-test-vars/generate_test_vars/cli.py
index ee08eae37..f6f7462d3 100755
--- a/pkgs/generate-test-vars/generate_test_vars/cli.py
+++ b/pkgs/generate-test-vars/generate_test_vars/cli.py
@@ -2,6 +2,7 @@
 
 import argparse
 import json
+import logging
 import os
 import shutil
 import subprocess
@@ -16,6 +17,8 @@ from clan_lib.flake.flake import Flake
 from clan_lib.machines.machines import Machine
 from clan_lib.nix import nix_config, nix_eval, nix_test_store
 
+log = logging.getLogger(__name__)
+
 sops_priv_key = (
     "AGE-SECRET-KEY-1PL0M9CWRCG3PZ9DXRTTLMCVD57U6JDFE8K7DNVQ35F4JENZ6G3MQ0RQLRV"
 )
@@ -141,6 +144,7 @@ def parse_args() -> Options:
 
 
 def main() -> None:
+    logging.basicConfig(level=logging.DEBUG)
     os.environ["CLAN_NO_COMMIT"] = "1"
     opts = parse_args()
     test_dir = opts.test_dir