diff --git a/build-requirements.txt b/build-requirements.txt
new file mode 100644
index 00000000..b6d2452f
--- /dev/null
+++ b/build-requirements.txt
@@ -0,0 +1,7 @@
+# NOTES(lourot):
+# * We don't install charmcraft via pip anymore because it anyway spins up a
+#   container and scp the system's charmcraft snap inside it. So the charmcraft
+#   snap is necessary on the system anyway.
+# * `tox -e build` successfully validated with charmcraft 1.2.1
+
+cffi==1.14.6; python_version < '3.6'  # cffi 1.15.0 drops support for py35.
diff --git a/charmcraft.yaml b/charmcraft.yaml
index ba84f314..11d5f7cd 100644
--- a/charmcraft.yaml
+++ b/charmcraft.yaml
@@ -6,6 +6,7 @@ parts:
     source: .
     prime:
       - actions/*
+      - charmhelpers/*
       - files/*
       - hooks/*
       - lib/*
diff --git a/neutron-api.charm b/neutron-api.charm
new file mode 100644
index 00000000..33d85f01
Binary files /dev/null and b/neutron-api.charm differ
diff --git a/osci.yaml b/osci.yaml
index da6cd318..27b6d864 100644
--- a/osci.yaml
+++ b/osci.yaml
@@ -4,3 +4,7 @@
       - charm-unit-jobs-py39
       - charm-xena-functional-jobs
       - charm-yoga-functional-jobs
+    vars:
+      needs_charm_build: true
+      charm_build_name: neutron-api
+      build_type: charmcraft
diff --git a/rename.sh b/rename.sh
new file mode 100755
index 00000000..d0c35c97
--- /dev/null
+++ b/rename.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+charm=$(grep "charm_build_name" osci.yaml | awk '{print $2}')
+echo "renaming ${charm}_*.charm to ${charm}.charm"
+echo -n "pwd: "
+pwd
+ls -al
+echo "Removing bad downloaded charm maybe?"
+if [[ -e "${charm}.charm" ]];
+then
+    rm "${charm}.charm"
+fi
+echo "Renaming charm here."
+mv ${charm}_*.charm ${charm}.charm
diff --git a/tests/bundles/focal-xena.yaml b/tests/bundles/focal-xena.yaml
index 5c980b14..8ae90c27 100644
--- a/tests/bundles/focal-xena.yaml
+++ b/tests/bundles/focal-xena.yaml
@@ -23,7 +23,7 @@ applications:
       source: *openstack-origin
     channel: latest/edge
   neutron-api:
-    charm: ../../
+    charm: ../../neutron-api.charm
     num_units: 1
     options:
       manage-neutron-plugin-legacy-mode: True
diff --git a/tests/bundles/focal-yoga.yaml b/tests/bundles/focal-yoga.yaml
index f97cd685..934a19cc 100644
--- a/tests/bundles/focal-yoga.yaml
+++ b/tests/bundles/focal-yoga.yaml
@@ -23,7 +23,7 @@ applications:
       source: *openstack-origin
     channel: latest/edge
   neutron-api:
-    charm: ../../
+    charm: ../../neutron-api.charm
     num_units: 1
     options:
       manage-neutron-plugin-legacy-mode: True
diff --git a/tests/bundles/impish-xena.yaml b/tests/bundles/impish-xena.yaml
index 3c4d6315..df8a3d72 100644
--- a/tests/bundles/impish-xena.yaml
+++ b/tests/bundles/impish-xena.yaml
@@ -23,7 +23,7 @@ applications:
       source: *openstack-origin
     channel: latest/edge
   neutron-api:
-    charm: ../../
+    charm: ../../neutron-api.charm
     num_units: 1
     options:
       manage-neutron-plugin-legacy-mode: True
diff --git a/tests/bundles/jammy-yoga.yaml b/tests/bundles/jammy-yoga.yaml
index 8322c265..663a2f7e 100644
--- a/tests/bundles/jammy-yoga.yaml
+++ b/tests/bundles/jammy-yoga.yaml
@@ -23,7 +23,7 @@ applications:
       source: *openstack-origin
     channel: latest/edge
   neutron-api:
-    charm: ../../
+    charm: ../../neutron-api.charm
     num_units: 1
     options:
       manage-neutron-plugin-legacy-mode: True
diff --git a/tox.ini b/tox.ini
index 86d1e904..81fd2492 100644
--- a/tox.ini
+++ b/tox.ini
@@ -37,10 +37,20 @@ setenv = VIRTUAL_ENV={envdir}
 install_command =
   {toxinidir}/pip.sh install {opts} {packages}
 commands = stestr run --slowest {posargs}
-allowlist_externals = juju
+allowlist_externals =
+    charmcraft
+    rename.sh
 passenv = HOME TERM CS_* OS_* TEST_*
 deps = -r{toxinidir}/test-requirements.txt
 
+[testenv:build]
+basepython = python3
+deps = -r{toxinidir}/build-requirements.txt
+commands =
+    charmcraft clean
+    charmcraft -v build
+    {toxinidir}/rename.sh
+
 [testenv:py35]
 basepython = python3.5
 deps = -r{toxinidir}/requirements.txt