diff --git a/environment.yml b/environment.yml
index a87d9d0..c2ee3ff 100644
--- a/environment.yml
+++ b/environment.yml
@@ -9,6 +9,7 @@ dependencies:
   - python-slugify>=1.2.1
   - raven>=6.0.0
   - distro
+  - natsort[fast]>=8.4.0
   - pip
   - pip:
     - mozjpeg-lossless-optimization>=1.1.2