diff --git a/src/c3nav/mapdata/render/engines/opengl.py b/src/c3nav/mapdata/render/engines/opengl.py
index 2db70a25..67b700e0 100644
--- a/src/c3nav/mapdata/render/engines/opengl.py
+++ b/src/c3nav/mapdata/render/engines/opengl.py
@@ -5,12 +5,12 @@ from itertools import chain
 from queue import Queue
 from typing import Optional
 
+import moderngl
 import numpy as np
 from PIL import Image
 from shapely.geometry import CAP_STYLE, JOIN_STYLE, Polygon
 from shapely.ops import unary_union
 
-import moderngl
 from c3nav.mapdata.render.engines.base import FillAttribs, StrokeAttribs
 from c3nav.mapdata.render.engines.base3d import Base3DEngine
 from c3nav.mapdata.render.geometry import HybridGeometry
diff --git a/src/c3nav/tileserver/wsgi.py b/src/c3nav/tileserver/wsgi.py
index 9246cd3a..1414e427 100644
--- a/src/c3nav/tileserver/wsgi.py
+++ b/src/c3nav/tileserver/wsgi.py
@@ -10,9 +10,9 @@ from datetime import datetime
 from email.utils import formatdate
 from io import BytesIO
 
+import pylibmc
 import requests
 
-import pylibmc
 from c3nav.mapdata.utils.cache import CachePackage
 from c3nav.mapdata.utils.tiles import (build_access_cache_key, build_base_cache_key, build_tile_etag, get_tile_bounds,
                                        parse_tile_access_cookie)
diff --git a/src/requirements/production.txt b/src/requirements/production.txt
index e92148f9..4d708d77 100644
--- a/src/requirements/production.txt
+++ b/src/requirements/production.txt
@@ -10,7 +10,7 @@ MeshPy>=2018.2,<2018.3
 rtree>=0.8,<0.9
 celery>=4.2,<4.3
 requests>=2.19,<2.20
-Pillow>=5.2,<5.3
+Pillow>=6.2,<6.3
 qrcode>=6.0,<6.1
 matplotlib>=2.2,<2.3
 scipy>=1.1,<1.2