diff --git a/checkmate/db.py b/checkmate/db.py
index 3bcbc26b..09b5113d 100644
--- a/checkmate/db.py
+++ b/checkmate/db.py
@@ -11,6 +11,14 @@
 
 LOG = logging.getLogger(__name__)
 
+NAMING_CONVENTIONS = {
+    "ix": "ix__%(column_0_label)s",
+    "uq": "uq__%(table_name)s__%(column_0_name)s",
+    "ck": "ck__%(table_name)s__%(constraint_name)s",
+    "fk": "fk__%(table_name)s__%(column_0_name)s__%(referred_table_name)s",
+    "pk": "pk__%(table_name)s",
+}
+
 
 class BaseClass:
     """Functions common to all SQLAlchemy models."""
@@ -32,15 +40,7 @@ def __repr__(self):
     # alembic after creation much easier. See:
     #   http://docs.sqlalchemy.org/en/latest/core/constraints.html#configuring-constraint-naming-conventions
     cls=BaseClass,
-    metadata=sqlalchemy.MetaData(
-        naming_convention={
-            "ix": "ix__%(column_0_label)s",
-            "uq": "uq__%(table_name)s__%(column_0_name)s",
-            "ck": "ck__%(table_name)s__%(constraint_name)s",
-            "fk": "fk__%(table_name)s__%(column_0_name)s__%(referred_table_name)s",
-            "pk": "pk__%(table_name)s",
-        }
-    ),
+    metadata=sqlalchemy.MetaData(naming_convention=NAMING_CONVENTIONS),
 )
 
 
@@ -115,11 +115,11 @@ def _session(request):  # pragma: no cover
     @request.add_finished_callback
     def close_the_sqlalchemy_session(_request):  # pylint: disable=unused-variable
         connections = (
-            session.transaction._connections  # pylint:disable=protected-access,no-member
+            session.transaction._connections  # pylint:disable=protected-access
         )
         if len(connections) > 1:
             LOG.warning("closing an unclosed DB session")
-        session.close()  # pylint:disable=no-member
+        session.close()
 
     return session
 
diff --git a/checkmate/migrations/env.py b/checkmate/migrations/env.py
index 67134697..1892f594 100644
--- a/checkmate/migrations/env.py
+++ b/checkmate/migrations/env.py
@@ -1,5 +1,5 @@
 # We didn't write this, so we don't care
-# pylint: disable=fixme,no-member
+# pylint: disable=no-member
 
 import os
 from logging.config import fileConfig
@@ -7,6 +7,8 @@
 from alembic import context
 from sqlalchemy import MetaData, engine_from_config, pool
 
+from checkmate.db import NAMING_CONVENTIONS
+
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
 config = context.config
@@ -19,16 +21,7 @@
 # for 'autogenerate' support
 # from myapp import mymodel
 # target_metadata = mymodel.Base.metadata
-# FIXME: This duplicates the naming_convention in checkmate/db.py.
-target_metadata = MetaData(
-    naming_convention={
-        "ix": "ix__%(column_0_label)s",
-        "uq": "uq__%(table_name)s__%(column_0_name)s",
-        "ck": "ck__%(table_name)s__%(constraint_name)s",
-        "fk": "fk__%(table_name)s__%(column_0_name)s__%(referred_table_name)s",
-        "pk": "pk__%(table_name)s",
-    }
-)
+target_metadata = MetaData(naming_convention=NAMING_CONVENTIONS)
 # other values from the config, defined by the needs of env.py,
 # can be acquired:
 # my_important_option = config.get_main_option("my_important_option")
diff --git a/requirements/lint.txt b/requirements/lint.txt
index c20e6d58..d76fba08 100644
--- a/requirements/lint.txt
+++ b/requirements/lint.txt
@@ -13,7 +13,7 @@ amqp==5.0.2
     #   -r requirements/requirements.txt
     #   -r requirements/tests.txt
     #   kombu
-astroid==2.4.2
+astroid==2.5.1
     # via pylint
 attrs==20.3.0
     # via
@@ -232,7 +232,7 @@ pycparser==2.20
     #   cffi
 pydocstyle==5.1.1
     # via -r requirements/lint.in
-pylint==2.6.0
+pylint==2.7.2
     # via -r requirements/lint.in
 pyparsing==2.4.7
     # via
@@ -314,7 +314,6 @@ six==1.15.0
     # via
     #   -r requirements/requirements.txt
     #   -r requirements/tests.txt
-    #   astroid
     #   click-repl
     #   cryptography
     #   google-auth
diff --git a/tests/.pylintrc b/tests/.pylintrc
index caf186b3..f85ba0fd 100644
--- a/tests/.pylintrc
+++ b/tests/.pylintrc
@@ -27,3 +27,16 @@ disable=bad-continuation,
 [REPORTS]
 output-format=colorized
 score=no
+
+[SIMILARITIES]
+# Minimum lines number of a similarity.
+min-similarity-lines=4
+
+# Ignore comments when computing similarities.
+ignore-comments=yes
+
+# Ignore docstrings when computing similarities.
+ignore-docstrings=yes
+
+# Ignore imports when computing similarities.
+ignore-imports=yes