diff --git a/anatomy/models.py b/anatomy/models.py
index 0cd9837f..0ccb13a0 100644
--- a/anatomy/models.py
+++ b/anatomy/models.py
@@ -205,6 +205,7 @@ class AnatomyQuestion(models.Model):
 
 
 
+@reversion.register
 class Answer(models.Model):
     question = models.ForeignKey(
         AnatomyQuestion, related_name="answers", on_delete=models.CASCADE