diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8aca3562d..0f4d337ef 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -70,13 +70,13 @@ migrations:
 #   services:
 #   - postgres:latest
 #   - redis:latest
-# pylint:
-#   script:
-#     - pylint passbook
-#   stage: test
-#   services:
-#   - postgres:latest
-#   - redis:latest
+pylint:
+  script:
+    - pylint passbook
+  stage: test
+  services:
+  - postgres:latest
+  - redis:latest
 coverage:
   script:
     - coverage run manage.py test
diff --git a/Pipfile b/Pipfile
index 77825ff20..211c02a1b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -41,12 +41,11 @@ pyuwsgi = "*"
 python_version = "3.7"
 
 [dev-packages]
-astroid = "==2.2.5"
 coverage = "*"
 isort = "*"
 pylint = "==2.3.1"
-pylint-django = "==2.0.10"
-prospector = "==1.1.7"
+pylint-django = "*"
+prospector = "*"
 django-debug-toolbar = "*"
 bumpversion = "*"
 unittest-xml-reporting = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index 3257b834c..56e555694 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "1f0a33bfd6eeb5d7dcc9b734eaf7250f84e84ff1b6e7f6fd0483ecf11fef4537"
+            "sha256": "94b3d5140f0c31dac1fc77af75a0df30ae4fb0571bf6b7fcd722487c63dc1872"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -767,7 +767,6 @@
                 "sha256:6560e1e1749f68c64a4b5dee4e091fce798d2f0d84ebe638cf0e0585a343acf4",
                 "sha256:b65db1bbaac9f9f4d190199bb8680af6f6f84fd3769a5ea883df8a91fe68b4c4"
             ],
-            "index": "pypi",
             "version": "==2.2.5"
         },
         "autopep8": {
diff --git a/passbook/sources/__init__.py b/passbook/sources/__init__.py
new file mode 100644
index 000000000..e69de29bb