diff --git a/charmcraft.yaml b/charmcraft.yaml
index 515b5e3..9fe8fce 100644
--- a/charmcraft.yaml
+++ b/charmcraft.yaml
@@ -4,6 +4,9 @@ parts:
   charm:
     source: src/
     plugin: reactive
+    reactive-charm-build-arguments:
+      - --use-lock-file-branches
+      - --verbose
     build-snaps:
       - charm/3.x/stable
     build-environment:
diff --git a/osci.yaml b/osci.yaml
index af1c5a6..299567e 100644
--- a/osci.yaml
+++ b/osci.yaml
@@ -6,4 +6,4 @@
       needs_charm_build: true
       charm_build_name: nova-cell-controller
       build_type: charmcraft
-      charmcraft_channel: 2.0/stable
+      charmcraft_channel: 2.1/stable
diff --git a/rebuild b/rebuild
index 596d783..d3d950d 100644
--- a/rebuild
+++ b/rebuild
@@ -2,4 +2,4 @@
 # when dependencies of the charm change,
 # but nothing in the charm needs to.
 # simply change the uuid to something new
-53e34944-1178-11ec-9edc-c38acc23d967
+7122132a-3dd4-11ee-b1fd-e3b5125dc9a2
diff --git a/tox.ini b/tox.ini
index 675ab0c..5e29bfb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -75,6 +75,7 @@ commands = stestr run --slowest {posargs}
 [testenv:pep8]
 basepython = python3
 deps = flake8==3.9.2
+       PyYAML==6.0.1
        git+https://github.com/juju/charm-tools.git
 commands = flake8 {posargs} src unit_tests