diff --git a/pkg/arvo/app/graph-store.hoon b/pkg/arvo/app/graph-store.hoon
index 42c95da91d..b74743e115 100644
--- a/pkg/arvo/app/graph-store.hoon
+++ b/pkg/arvo/app/graph-store.hoon
@@ -66,8 +66,7 @@
     ::
         update-logs.old
       %-  ~(run by update-logs.old)
-      |=  =update-log:store
-      *update-log:store
+      |=(a=* *update-log:store)
     ==
   ::
       %1
@@ -77,8 +76,7 @@
     ::
         update-logs.old
       %-  ~(run by update-logs.old)
-      |=  =update-log:store
-      *update-log:store
+      |=(a=* *update-log:store)
     ==
   ::
     %2  [cards this(state old)]
@@ -247,20 +245,27 @@
     ==
     ::
     ++  add-graph
-      |=  [=resource:store =graph:store mark=(unit mark:store)]
+      |=  $:  =resource:store
+              =graph:store
+              mark=(unit mark:store)
+              overwrite=?
+          ==
       ^-  (quip card _state)
-      ?<  (~(has by archive) resource)
-      ?<  (~(has by graphs) resource)
+      ?>  ?|  overwrite
+              ?&  !(~(has by archive) resource)
+                  !(~(has by graphs) resource)
+          ==  ==
       ?>  (validate-graph graph mark)
       :_  %_  state
               graphs       (~(put by graphs) resource [graph mark])
               update-logs  (~(put by update-logs) resource (gas:orm-log ~ ~))
+              archive      (~(del by archive) resource)
               validators
             ?~  mark  validators
             (~(put in validators) u.mark)
           ==
       %-  zing
-      :~  (give [/updates /keys ~] [%add-graph resource graph mark])
+      :~  (give [/updates /keys ~] [%add-graph resource graph mark overwrite])
           ?~  mark  ~
           ?:  (~(has in validators) u.mark)  ~
           =/  wire  /validator/[u.mark]
@@ -646,7 +651,7 @@
     !>  ^-  update:store
     :+  %0
       now.bowl
-    [%add-graph [ship term] `graph:store`p.u.result q.u.result]
+    [%add-graph [ship term] `graph:store`p.u.result q.u.result %.y]
   ::
       ::  note: near-duplicate of /x/graph
       ::
@@ -662,7 +667,7 @@
     !>  ^-  update:store
     :+  %0
       now.bowl
-    [%add-graph [ship term] `graph:store`p.u.result q.u.result]
+    [%add-graph [ship term] `graph:store`p.u.result q.u.result %.y]
   ::
       [%x %graph-subset @ @ @ @ ~]
     =/  =ship  (slav %p i.t.t.path)
diff --git a/pkg/arvo/app/link-store.hoon b/pkg/arvo/app/link-store.hoon
index 0d8f472cfb..d653e7748c 100644
--- a/pkg/arvo/app/link-store.hoon
+++ b/pkg/arvo/app/link-store.hoon
@@ -116,7 +116,7 @@
     |=  [=resource =graph:gra]
     ^-  card
     %-  poke-graph-store
-    [%0 now.bowl %add-graph resource graph `%graph-validator-link]
+    [%0 now.bowl %add-graph resource graph `%graph-validator-link %.y]
   ::
   ++  archive-graph
     |=  =resource
diff --git a/pkg/arvo/app/publish.hoon b/pkg/arvo/app/publish.hoon
index 1ee0c74505..2588be4338 100644
--- a/pkg/arvo/app/publish.hoon
+++ b/pkg/arvo/app/publish.hoon
@@ -271,6 +271,7 @@
                 rid 
                 graph
                 `%graph-validator-publish
+                %.y
             ==
             (poke-graph-push %add rid)
           ==
diff --git a/pkg/arvo/gen/graph-store/add-graph.hoon b/pkg/arvo/gen/graph-store/add-graph.hoon
index a95468928b..0192ede89e 100644
--- a/pkg/arvo/gen/graph-store/add-graph.hoon
+++ b/pkg/arvo/gen/graph-store/add-graph.hoon
@@ -3,8 +3,8 @@
 /+  *graph-store
 :-  %say
 |=  $:  [now=@da eny=@uvJ =beak]
-        [[=resource mark=(unit mark) ~] ~]
+        [[=resource mark=(unit mark) overwrite=? ~] ~]
     ==
 :-  %graph-update
 ^-  update
-[%0 now [%add-graph resource (gas:orm ~ ~) mark]]
+[%0 now [%add-graph resource (gas:orm ~ ~) mark overwrite]]
diff --git a/pkg/arvo/lib/graph-store.hoon b/pkg/arvo/lib/graph-store.hoon
index 0b339bc769..397637c865 100644
--- a/pkg/arvo/lib/graph-store.hoon
+++ b/pkg/arvo/lib/graph-store.hoon
@@ -123,6 +123,7 @@
         :~  [%resource (enjs:res resource.upd)]
             [%graph (graph graph.upd)]
             [%mark ?~(mark.upd ~ s+u.mark.upd)]
+            [%overwrite b+overwrite.upd]
         ==
       ::
           %remove-graph
@@ -276,6 +277,7 @@
       :~  [%resource dejs:res]
           [%graph graph]
           [%mark (mu so)]
+          [%overwrite bo]
       ==
     ::
     ++  graph
diff --git a/pkg/arvo/sur/graph-store.hoon b/pkg/arvo/sur/graph-store.hoon
index edcfb41359..e2570fed81 100644
--- a/pkg/arvo/sur/graph-store.hoon
+++ b/pkg/arvo/sur/graph-store.hoon
@@ -42,7 +42,7 @@
 ::
 +$  update-0
   $%  logged-update-0
-      [%add-graph =resource =graph mark=(unit mark)]
+      [%add-graph =resource =graph mark=(unit mark) overwrite=?]
       [%remove-graph =resource]
     ::
       [%add-tag =term =resource]
diff --git a/pkg/arvo/ted/graph/create.hoon b/pkg/arvo/ted/graph/create.hoon
index 2871218327..e0c5448186 100644
--- a/pkg/arvo/ted/graph/create.hoon
+++ b/pkg/arvo/ted/graph/create.hoon
@@ -38,7 +38,7 @@
 ?.  =(our.bowl entity.rid.action)
   (strand-fail:strandio %bad-request ~)
 =/  =update:graph
-  [%0 now.bowl %add-graph rid.action *graph:graph mark.action]
+  [%0 now.bowl %add-graph rid.action *graph:graph mark.action %.n]
 ;<  ~  bind:m
   (poke-our %graph-store graph-update+!>(update))
 ;<  ~  bind:m