diff --git a/src/refactor_nrepl/artifacts.clj b/src/refactor_nrepl/artifacts.clj
index 5442ebff..f61b704b 100644
--- a/src/refactor_nrepl/artifacts.clj
+++ b/src/refactor_nrepl/artifacts.clj
@@ -19,11 +19,11 @@
     (if (zero? lm) nil lm)))
 
 ;;  structure here is {"prismatic/schem" ["0.1.1" "0.2.0" ...]}
-(defonce artifacts (atom (if (.exists (io/file artifacts-file))
-                           (->> artifacts-file slurp edn/read-string (into {}))
-                           {})
-                         :meta {:last-modified
-                                (get-last-modified-from-file artifacts-file)}))
+(def artifacts (atom (if (.exists (io/file artifacts-file))
+                       (->> artifacts-file slurp edn/read-string (into {}))
+                       {})
+                     :meta {:last-modified
+                            (get-last-modified-from-file artifacts-file)}))
 
 (def millis-per-day (* 24 60 60 1000))
 
diff --git a/src/refactor_nrepl/ns/libspecs.clj b/src/refactor_nrepl/ns/libspecs.clj
index 04d61ffb..f3092884 100644
--- a/src/refactor_nrepl/ns/libspecs.clj
+++ b/src/refactor_nrepl/ns/libspecs.clj
@@ -8,7 +8,7 @@
 
 ;; The structure here is {path {lang [timestamp value]}}
 ;; where lang is either :clj or :cljs
-(defonce ^:private cache (atom {}))
+(def ^:private cache (atom {}))
 
 (defn- aliases [libspecs]
   (->> libspecs