diff --git a/Makefile b/Makefile
index 623a38e03..59433c8eb 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@ help:
 	@echo "  test       to run the tests"
 	@echo "  isort      to sort imports"
 	@echo "  blacken    to format the code"
+	@echo "  bandit     to run some simple security checkers"
 .PHONY: help
 
 clean:
@@ -55,6 +56,10 @@ check-black:
 	@pipenv run black src/ --check
 .PHONY: blacken check-black
 
+bandit:
+	@pipenv run bandit -a file -r src/ oauth_example/ oidc_example/ 
+.PHONY: bandit
+
 check-pylama:
 	@pipenv run pylama $(OICDIR) $(TESTDIR)
 .PHONY: check-pylama
diff --git a/oidc_example/op3/server.py b/oidc_example/op3/server.py
index 283ddc8c4..c6e47301d 100755
--- a/oidc_example/op3/server.py
+++ b/oidc_example/op3/server.py
@@ -10,6 +10,8 @@
 import traceback
 import argparse
 import importlib
+import logging
+
 from mako.lookup import TemplateLookup
 
 from oic import rndstr
@@ -243,7 +245,7 @@ def meta_info(self, environ, start_response):
              ]}
 
         """
-        print '\n in meta-info'
+        print('\n in meta-info')
         pass
 
     def webfinger(self, environ, start_response):
@@ -275,7 +277,7 @@ def application(self, environ, start_response):
         """
         path = environ.get('PATH_INFO', '').lstrip('/')
 
-        print 'start_response: ', start_response
+        print('start_response: ', start_response)
 
         if path == "robots.txt":
             return static(self, environ, start_response, "static/robots.txt")
@@ -470,7 +472,7 @@ def mako_renderer(template_name, context):
     server = wsgiserver.CherryPyWSGIServer(('0.0.0.0', config.PORT), _app.application)
     server.ssl_adapter = BuiltinSSLAdapter(config.SERVER_CERT, config.SERVER_KEY)
 
-    print "OIDC Provider server started (issuer={}, port={})".format(config.ISSUER, config.PORT)
+    print("OIDC Provider server started (issuer={}, port={})".format(config.ISSUER, config.PORT))
 
     try:
         server.start()
diff --git a/setup.py b/setup.py
index 402ffdfb3..f7bf0c19c 100755
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,7 @@ def run_tests(self):
         'develop': ["cherrypy==3.2.4", "pyOpenSSL"],
         'testing': tests_requires,
         'docs': ['Sphinx', 'sphinx-autobuild', 'alabaster'],
-        'quality': ['pylama', 'isort', 'eradicate', 'mypy', 'black'],
+        'quality': ['pylama', 'isort', 'eradicate', 'mypy', 'black', 'bandit'],
         'ldap_authn': ['pyldap'],
     },
     install_requires=[