diff --git a/environment.yml b/environment.yml
index a65c2a4..c442940 100644
--- a/environment.yml
+++ b/environment.yml
@@ -7,7 +7,7 @@ dependencies:
   - nbgitpuller
   - pip
   - pip:
-      - otter-grader==4.3.2
+      - otter-grader==5.5.0
       - numpy==1.22.0
       - datascience==0.17.5
       # Allow users to download their home directories