diff --git a/debian/changelog b/debian/changelog
index 0c5ed5d..70c36b6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@
 
   * New upstream release.
   * Removed Python 2 support.
+  * Run unit tests from installed Python package.
 
  -- Thomas Goirand <zigo@debian.org>  Tue, 26 Mar 2019 17:50:55 +0100
 
diff --git a/debian/python3-castellan.install b/debian/python3-castellan.install
new file mode 100644
index 0000000..d474166
--- /dev/null
+++ b/debian/python3-castellan.install
@@ -0,0 +1,2 @@
+/etc
+/usr
diff --git a/debian/rules b/debian/rules
index 87d79b0..564f7bf 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,17 +13,21 @@
 	echo "Do nothing..."
 
 override_dh_auto_install:
-	pkgos-dh_auto_install --no-py2
+	for i in $(PYTHON3S) ; do \
+		python3 setup.py install -f --install-layout=deb --root=$(CURDIR)/debian/tmp ; \
+	done
 
-	mkdir -p $(CURDIR)/debian/python-castellan/etc/castellan
-	PYTHONPATH=. oslo-config-generator --output-file $(CURDIR)/debian/python-castellan/etc/castellan/castellan.conf \
+	mkdir -p $(CURDIR)/debian/tmp/etc/castellan
+	PYTHONPATH=. oslo-config-generator --output-file $(CURDIR)/debian/tmp/etc/castellan/castellan.conf \
 		--wrap-width 140 \
 		--namespace castellan.config
 
+ifeq (,$(findstring nocheck, $(DEB_BUILD_OPTIONS)))
+	PYTHONPATH=$(CURDIR)/debian/tmp/usr/lib/python3/dist-packages pkgos-dh_auto_test --no-py2 'castellan\.tests\.unit.*'
+endif
+
 override_dh_auto_test:
-ifeq (,$(findstring nocheck, $(DEB_BUILD_OPTIONS)))
-	pkgos-dh_auto_test --no-py2 'castellan\.tests\.unit.*'
-endif
+	echo "Do nothing..."
 
 override_dh_sphinxdoc:
 ifeq (,$(findstring nodoc, $(DEB_BUILD_OPTIONS)))