diff --git a/anatomy/models.py b/anatomy/models.py
index 5eadacb8..d204a133 100644
--- a/anatomy/models.py
+++ b/anatomy/models.py
@@ -209,6 +209,9 @@ class Exam(models.Model):
     active = models.BooleanField(help_text="If an exam should be available",
                                  default=True)
 
+    recreate_json = models.BooleanField(help_text="If the json cache needs updating",
+                                 default=False)
+
     def __str__(self):
         return self.name