diff --git a/migrations/1_move_doc_lines_to_doc_collection.coffee b/migrations/1_move_doc_lines_to_doc_collection.coffee
index d1f94638b3..8712cf9f54 100644
--- a/migrations/1_move_doc_lines_to_doc_collection.coffee
+++ b/migrations/1_move_doc_lines_to_doc_collection.coffee
@@ -26,6 +26,7 @@ loadProjectIds = (callback)->
 	console.log "loading project ids from #{all_projects_path}"
 	fs.readFile all_projects_path, "utf-8", (err, data)->
 		ids = data.split("\n")
+		ids = _.filter ids, (id)-> id? and id.length == 24
 		console.log "loaded #{ids.length} project ids from #{all_projects_path}"
 		callback err, ids
 
diff --git a/migrations/2_doc_lines_delete_from_project.coffee b/migrations/2_doc_lines_delete_from_project.coffee
index 1e6a13dbf7..2d5222f63d 100644
--- a/migrations/2_doc_lines_delete_from_project.coffee
+++ b/migrations/2_doc_lines_delete_from_project.coffee
@@ -25,6 +25,7 @@ loadProjectIds = (callback)->
 	console.log "loading project ids from #{all_projects_path}"
 	fs.readFile all_projects_path, "utf-8", (err, data)->
 		ids = data.split("\n")
+		ids = _.filter ids, (id)-> id? and id.length == 24
 		console.log "loaded #{ids.length} project ids from #{all_projects_path}"
 		callback err, ids
 
diff --git a/package.json b/package.json
index cee7ffc776..6b28b15e29 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "An online collaborative LaTeX editor",
   "dependencies": {
     "async": "^0.9.0",
-    "east": "^0.2.3",
+    "east": "0.5.1",
     "east-mongo": "^0.1.2",
     "grunt-shell": "^1.1.1",
     "lodash": "^3.0.0",