diff --git a/README.md b/README.md
index 76e068a..8f2da43 100644
--- a/README.md
+++ b/README.md
@@ -76,11 +76,8 @@ nippy/stress-data
  :bigdec       (bigdec 3.1415926535897932384626433832795)
 
  :ratio        22/7
-
- ;; Clojure 1.4+
- ;; :tagged-uuid  (java.util.UUID/randomUUID)
- ;; :tagged-date  (java.util.Date.)
- }
+ :tagged-uuid  (java.util.UUID/randomUUID)
+ :tagged-date  (java.util.Date.)}
 ```
 
 Serialize it:
diff --git a/project.clj b/project.clj
index 0d236b5..7451f11 100644
--- a/project.clj
+++ b/project.clj
@@ -3,15 +3,14 @@
   :url "https://github.com/ptaoussanis/nippy"
   :license {:name "Eclipse Public License"
             :url  "http://www.eclipse.org/legal/epl-v10.html"}
-  :dependencies [[org.clojure/clojure    "1.3.0"]
+  :dependencies [[org.clojure/clojure    "1.4.0"]
                  [expectations           "1.4.43"]
                  [org.iq80.snappy/snappy "0.3"]]
-  :profiles {:1.3  {:dependencies [[org.clojure/clojure "1.3.0"]]}
-             :1.4  {:dependencies [[org.clojure/clojure "1.4.0"]]}
+  :profiles {:1.4  {:dependencies [[org.clojure/clojure "1.4.0"]]}
              :1.5  {:dependencies [[org.clojure/clojure "1.5.1"]]}
              :dev  {:dependencies []}
              :test {:dependencies [[org.xerial.snappy/snappy-java "1.0.5-M3"]]}}
-  :aliases {"test-all"  ["with-profile" "test,1.3:test,1.4:test,1.5" "expectations"]
+  :aliases {"test-all"  ["with-profile" "test,1.4:test,1.5" "expectations"]
             "test-auto" ["with-profile" "test" "autoexpect"]
             "start-dev" ["with-profile" "dev,test" "repl" ":headless"]}
   :plugins [[lein-expectations "0.0.7"]
diff --git a/src/taoensso/nippy.clj b/src/taoensso/nippy.clj
index e005e1c..931b0ff 100644
--- a/src/taoensso/nippy.clj
+++ b/src/taoensso/nippy.clj
@@ -278,11 +278,8 @@
   (-> (freeze-to-bytes "my data" :compress? true)
       (thaw-from-bytes :compressed? false)))
 
-(def stress-data
-  "Reference data used for tests & benchmarks."
-  (let [support-tagged-literals?
-        (utils/version-sufficient? (clojure-version) "1.4.0")]
-
+(def stress-data "Reference data used for tests & benchmarks."
+  (let []
     {:bytes        (byte-array [(byte 1) (byte 2) (byte 3)])
      :nil          nil
      :boolean      true
@@ -323,6 +320,6 @@
 
      :ratio        22/7
 
-     ;; Clojure 1.4+
-     :tagged-uuid  (when support-tagged-literals? (java.util.UUID/randomUUID))
-     :tagged-date  (when support-tagged-literals? (java.util.Date.))}))
\ No newline at end of file
+     ;; Clojure 1.4+ tagged literals
+     :tagged-uuid  (java.util.UUID/randomUUID)
+     :tagged-date  (java.util.Date.)}))
\ No newline at end of file
diff --git a/src/taoensso/nippy/benchmarks.clj b/src/taoensso/nippy/benchmarks.clj
index 64c5012..d004c36 100644
--- a/src/taoensso/nippy/benchmarks.clj
+++ b/src/taoensso/nippy/benchmarks.clj
@@ -1,7 +1,7 @@
 (ns taoensso.nippy.benchmarks
   {:author "Peter Taoussanis"}
-  (:use     [taoensso.nippy :as nippy :only (freeze-to-bytes thaw-from-bytes)])
-  (:require [taoensso.nippy.utils :as utils]))
+  (:require [taoensso.nippy :as nippy :refer (freeze-to-bytes thaw-from-bytes)]
+            [taoensso.nippy.utils :as utils]))
 
 ;; Remove stuff from stress-data that breaks reader
 (def data (dissoc nippy/stress-data :queue :queue-empty :bytes))
diff --git a/test/taoensso/nippy/tests/main.clj b/test/taoensso/nippy/tests/main.clj
index aa1ff62..47625ca 100644
--- a/test/taoensso/nippy/tests/main.clj
+++ b/test/taoensso/nippy/tests/main.clj
@@ -1,6 +1,6 @@
 (ns taoensso.nippy.tests.main
-  (:use     [expectations   :as test])
-  (:require [taoensso.nippy :as nippy]
+  (:require [expectations   :as test :refer :all]
+            [taoensso.nippy :as nippy]
             [taoensso.nippy.benchmarks :as benchmarks]))
 
 ;; Remove stuff from stress-data that breaks roundtrip equality