diff --git a/Makefile b/Makefile
index 8ceefc4..959c3eb 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ PROJECTPATH = $(dir $(realpath $(firstword $(MAKEFILE_LIST))))
 
 VENV := .venv
 VENV_PIP := $(PROJECTPATH)/$(VENV)/bin/pip
-VENV_PYTHON := $(PROJECTPATH)/$(VENV)/bin/python2.7
+VENV_PYTHON := $(PROJECTPATH)/$(VENV)/bin/python3
 
 EXTRA_PY := $(PROJECTPATH)/prometheus-openstack-exporter
 
@@ -43,5 +43,5 @@ test-python: $(VENV)
 	$(VENV_PYTHON) -m unittest discover tests
 
 $(VENV):
-	virtualenv --system-site-packages -p python2.7 $(PROJECTPATH)/$(VENV)
+	virtualenv --system-site-packages -p python3 $(PROJECTPATH)/$(VENV)
 	$(VENV_PIP) install -I -r requirements.txt
diff --git a/prometheus-openstack-exporter b/prometheus-openstack-exporter
index 6ebd7d0..9010f35 100755
--- a/prometheus-openstack-exporter
+++ b/prometheus-openstack-exporter
@@ -29,16 +29,16 @@ import logging.handlers
 import pickle
 import random
 import traceback
-import urlparse
-from BaseHTTPServer import BaseHTTPRequestHandler
-from BaseHTTPServer import HTTPServer
-from SocketServer import ForkingMixIn
+import urllib.parse
+from http.server import BaseHTTPRequestHandler
+from http.server import HTTPServer
 from os import environ as env
 from os import path, rename
+from socketserver import ForkingMixIn
 from threading import Thread
 from time import sleep, time
 
-from cinderclient.v2 import client as cinder_client
+from cinderclient.v3 import client as cinder_client
 
 from netaddr import IPRange
 
@@ -159,7 +159,7 @@ def get_clients():
         cinder = cinder_client.Client(session=sess_admin, endpoint_type=interface)
 
     else:
-        raise (ValueError("Invalid OS_IDENTITY_API_VERSION=%s" % ks_version))
+        raise ValueError
     log.debug("Client setup done, keystone ver {}".format(ks_version))
     return (keystone, nova, neutron, cinder)
 
@@ -405,7 +405,7 @@ class Neutron:
             labels,
             registry=self.registry,
         )
-        for k, v in ips.items():
+        for k, v in list(ips.items()):
             metrics.labels(*k).set(v)
         self.gen_subnet_size()
         return generate_latest(self.registry)
@@ -439,7 +439,7 @@ class Cinder:
         )
         if not self.use_nova_volumes:
             return
-        for t, q in self.prodstack["volume_quotas"].items():
+        for t, q in list(self.prodstack["volume_quotas"].items()):
             if t in self.tenant_map:
                 tenant = self.tenant_map[t]
             else:
@@ -743,7 +743,7 @@ class Nova:
             ["cloud", "tenant", "tenant_id", "type"],
             registry=self.registry,
         )
-        for t, q in self.prodstack["nova_quotas"].items():
+        for t, q in list(self.prodstack["nova_quotas"].items()):
             if t in self.tenant_map:
                 tenant = self.tenant_map[t]
             else:
@@ -989,7 +989,7 @@ class SwiftAccountUsage:
             registry=self.registry,
         )
 
-        for tenant_name, tenant_id in self.keystone_tenants_map.iteritems():
+        for tenant_name, tenant_id in self.keystone_tenants_map.items():
             account = self.reseller_prefix + tenant_id
             bytes_used = self._get_account_usage(account)
 
@@ -1047,7 +1047,7 @@ class OpenstackExporterHandler(BaseHTTPRequestHandler):
         BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
 
     def do_GET(self):  # noqa: D102, N802
-        url = urlparse.urlparse(self.path)
+        url = urllib.parse.urlparse(self.path)
         if url.path == "/metrics":
             try:
                 collectors = [
@@ -1055,7 +1055,7 @@ class OpenstackExporterHandler(BaseHTTPRequestHandler):
                     for collector in get_collectors(config.get("enabled_collectors"))
                 ]
                 log.debug("Collecting stats..")
-                output = ""
+                output = bytes()
                 for collector in collectors:
                     output += collector.get_stats()
                 if data_gatherer:
diff --git a/requirements.txt b/requirements.txt
index 8b88616..b247272 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ mock
 prometheus-client
 python-neutronclient
 python-novaclient
+python-cinderclient
 swift
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index c689b7e..6ae8945 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -1,5 +1,5 @@
 name: prometheus-openstack-exporter
-base: core
+base: core20
 version: git
 summary: Exposes high level OpenStack metrics to Prometheus.
 description: |
@@ -15,10 +15,10 @@ apps:
 parts:
   prometheus-openstack-exporter:
     plugin: python
-    python-version: python2
     source: .
     build-packages:
       - build-essential
+      - liberasurecode-dev
     stage-packages:
       - libdb5.3
       - liberasurecode-dev
diff --git a/tests/test_SwiftAccountUsage.py b/tests/test_SwiftAccountUsage.py
index 8766b33..a4471a2 100644
--- a/tests/test_SwiftAccountUsage.py
+++ b/tests/test_SwiftAccountUsage.py
@@ -22,7 +22,7 @@ def test__get_account_usage(self, _config, _requests_head, _get_account_ring):
                     "device": "sdb",
                     "id": 0,
                     "ip": "10.24.0.18",
-                    "meta": u"",
+                    "meta": "",
                     "port": 6002,
                     "region": 1,
                     "replication_ip": "10.24.0.18",
@@ -34,7 +34,7 @@ def test__get_account_usage(self, _config, _requests_head, _get_account_ring):
                     "device": "sdd",
                     "id": 50,
                     "ip": "10.24.0.71",
-                    "meta": u"",
+                    "meta": "",
                     "port": 6002,
                     "region": 1,
                     "replication_ip": "10.24.0.71",
@@ -46,7 +46,7 @@ def test__get_account_usage(self, _config, _requests_head, _get_account_ring):
                     "device": "sdi",
                     "id": 59,
                     "ip": "10.24.0.72",
-                    "meta": u"",
+                    "meta": "",
                     "port": 6002,
                     "region": 1,
                     "replication_ip": "10.24.0.72",