diff --git a/app/models/ability.rb b/app/models/ability.rb
index 28a978a..59e4aae 100644
--- a/app/models/ability.rb
+++ b/app/models/ability.rb
@@ -12,6 +12,8 @@ class Ability
 
       can :manage, :all
 
+      cannot :update, Cdao::Jurisprudence
+
       cannot :destroy, Cdao::Jurisprudence
       cannot :destroy, Cdao::Library
       cannot :destroy, Cdao::LibrarySubject