diff --git a/project.clj b/project.clj
index b038991..0077e1c 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject views "1.0.0"
+(defproject views "1.1.0"
   :description "A view to the past helps navigate the future."
 
   :url "https://github.com/diligenceengine/views"
@@ -8,15 +8,14 @@
 
   :dependencies [[org.clojure/clojure "1.6.0"]
                  [org.clojure/tools.logging "0.2.6"]
-                 [org.clojure/core.async "0.1.303.0-886421-alpha"]
                  [honeysql "0.4.3"]
                  [clj-logging-config "1.9.10"]
-                 [zip-visit "1.0.2"]
                  [prismatic/plumbing "0.3.5"]
-                 [pjstadig/humane-test-output "0.6.0"]]
+                 [pjstadig/humane-test-output "0.6.0"]
+                 [environ "1.0.0"]]
 
   :profiles {:test {:dependencies [[org.clojure/tools.nrepl "0.2.3"]
-                                   [environ "0.4.0"]
+                                   [environ "1.0.0"]
                                    [org.clojure/data.generators "0.1.2"]]
 
                     :injections [(require 'pjstadig.humane-test-output)
diff --git a/src/views/core.clj b/src/views/core.clj
index e012b05..7832c6f 100644
--- a/src/views/core.clj
+++ b/src/views/core.clj
@@ -4,7 +4,8 @@
   (:require
     [views.protocols :refer [IView id data relevant?]]
     [plumbing.core :refer [swap-pair!]]
-    [clojure.tools.logging :refer [debug error]]))
+    [clojure.tools.logging :refer [debug error]]
+    [environ.core :refer [env]]))
 
 ;; The view-system data structure has this shape:
 ;;
@@ -20,7 +21,12 @@
 ;;
 ;;  Each hint has the form {:namespace x :hint y}
 
-(def refresh-queue (ArrayBlockingQueue. 500))
+(def refresh-queue-size
+  (if-let [n (:views-refresh-queue-size env)]
+    (Long/parseLong n)
+    1000))
+
+(def refresh-queue (ArrayBlockingQueue. refresh-queue-size))
 
 (defn subscribe-view!
   [view-system view-sig subscriber-key data-hash]