diff --git a/re-natal.coffee b/re-natal.coffee
index 8df6df1..c67cc58 100644
--- a/re-natal.coffee
+++ b/re-natal.coffee
@@ -42,8 +42,7 @@ interfaceConf   =
       common:  ["handlers.cljs", "subs.cljs", "db.cljs"]
       other:   []
     deps:      ['[reagent "0.5.1" :exclusions [cljsjs/react]]'
-                '[re-frame "0.6.0"]'
-                '[prismatic/schema "1.0.4"]']
+                '[re-frame "0.6.0"]']
     shims:     ["cljsjs.react"]
     sampleCommandNs: '(in-ns \'$PROJECT_NAME_HYPHENATED$.ios.core)'
     sampleCommand: '(dispatch [:set-greeting "Hello Native World!"])'
@@ -55,8 +54,7 @@ interfaceConf   =
       common:  ["handlers.cljs", "subs.cljs", "db.cljs"]
       other:   [["reagent_dom.cljs","reagent/dom.cljs"], ["reagent_dom_server.cljs","reagent/dom/server.cljs"]]
     deps:      ['[reagent "0.6.0-rc" :exclusions [cljsjs/react cljsjs/react-dom cljsjs/react-dom-server]]'
-      '[re-frame "0.7.0"]'
-      '[prismatic/schema "1.0.4"]']
+      '[re-frame "0.7.0"]']
     shims:     ["cljsjs.react", "cljsjs.react.dom", "cljsjs.react.dom.server"]
     sampleCommandNs: '(in-ns \'$PROJECT_NAME_HYPHENATED$.ios.core)'
     sampleCommand: '(dispatch [:set-greeting "Hello Native World!"])'
diff --git a/resources/cljs-reagent/db.cljs b/resources/cljs-reagent/db.cljs
index 4ca749b..45022ab 100644
--- a/resources/cljs-reagent/db.cljs
+++ b/resources/cljs-reagent/db.cljs
@@ -1,8 +1,10 @@
 (ns $PROJECT_NAME_HYPHENATED$.db
-  (:require [schema.core :as s :include-macros true]))
+  (:require [cljs.spec :as s]))
 
-;; schema of app-db
-(def schema {:greeting s/Str})
+;; spec of app-db
+(s/def ::greeting string?)
+(s/def ::app-db
+  (s/keys :req-un [::greeting]))
 
 ;; initial state of app-db
 (def app-db {:greeting "Hello Clojure in iOS and Android!"})
diff --git a/resources/cljs-reagent/handlers.cljs b/resources/cljs-reagent/handlers.cljs
index 9d5db58..5fdf431 100644
--- a/resources/cljs-reagent/handlers.cljs
+++ b/resources/cljs-reagent/handlers.cljs
@@ -1,34 +1,35 @@
 (ns $PROJECT_NAME_HYPHENATED$.handlers
   (:require
     [re-frame.core :refer [register-handler after]]
-    [schema.core :as s :include-macros true]
-    [$PROJECT_NAME_HYPHENATED$.db :refer [app-db schema]]))
+    [cljs.spec :as s]
+    [$PROJECT_NAME_HYPHENATED$.db :as db :refer [app-db]]))
 
 ;; -- Middleware ------------------------------------------------------------
 ;;
 ;; See https://github.com/Day8/re-frame/wiki/Using-Handler-Middleware
 ;;
 (defn check-and-throw
-  "throw an exception if db doesn't match the schema."
-  [a-schema db]
-    (when-let [problems (s/check a-schema db)]
-      (throw (js/Error. (str "schema check failed: " problems)))))
+  "Throw an exception if db doesn't have a valid spec."
+  [spec db]
+  (when-not (s/valid? spec db)
+    (let [explain-data (s/explain-data spec db)]
+      (throw (ex-info (str "Spec check failed: " explain-data) explain-data)))))
 
-(def validate-schema-mw
+(def validate-spec-mw
   (if goog.DEBUG
-    (after (partial check-and-throw schema))
+    (after (partial check-and-throw ::db/app-db))
     []))
 
 ;; -- Handlers --------------------------------------------------------------
 
 (register-handler
   :initialize-db
-  validate-schema-mw
+  validate-spec-mw
   (fn [_ _]
     app-db))
 
 (register-handler
   :set-greeting
-  validate-schema-mw
+  validate-spec-mw
   (fn [db [_ value]]
-    (assoc db :greeting value)))
\ No newline at end of file
+    (assoc db :greeting value)))
diff --git a/resources/cljs-reagent6/db.cljs b/resources/cljs-reagent6/db.cljs
index 4ca749b..45022ab 100644
--- a/resources/cljs-reagent6/db.cljs
+++ b/resources/cljs-reagent6/db.cljs
@@ -1,8 +1,10 @@
 (ns $PROJECT_NAME_HYPHENATED$.db
-  (:require [schema.core :as s :include-macros true]))
+  (:require [cljs.spec :as s]))
 
-;; schema of app-db
-(def schema {:greeting s/Str})
+;; spec of app-db
+(s/def ::greeting string?)
+(s/def ::app-db
+  (s/keys :req-un [::greeting]))
 
 ;; initial state of app-db
 (def app-db {:greeting "Hello Clojure in iOS and Android!"})
diff --git a/resources/cljs-reagent6/handlers.cljs b/resources/cljs-reagent6/handlers.cljs
index 9d5db58..5fdf431 100644
--- a/resources/cljs-reagent6/handlers.cljs
+++ b/resources/cljs-reagent6/handlers.cljs
@@ -1,34 +1,35 @@
 (ns $PROJECT_NAME_HYPHENATED$.handlers
   (:require
     [re-frame.core :refer [register-handler after]]
-    [schema.core :as s :include-macros true]
-    [$PROJECT_NAME_HYPHENATED$.db :refer [app-db schema]]))
+    [cljs.spec :as s]
+    [$PROJECT_NAME_HYPHENATED$.db :as db :refer [app-db]]))
 
 ;; -- Middleware ------------------------------------------------------------
 ;;
 ;; See https://github.com/Day8/re-frame/wiki/Using-Handler-Middleware
 ;;
 (defn check-and-throw
-  "throw an exception if db doesn't match the schema."
-  [a-schema db]
-    (when-let [problems (s/check a-schema db)]
-      (throw (js/Error. (str "schema check failed: " problems)))))
+  "Throw an exception if db doesn't have a valid spec."
+  [spec db]
+  (when-not (s/valid? spec db)
+    (let [explain-data (s/explain-data spec db)]
+      (throw (ex-info (str "Spec check failed: " explain-data) explain-data)))))
 
-(def validate-schema-mw
+(def validate-spec-mw
   (if goog.DEBUG
-    (after (partial check-and-throw schema))
+    (after (partial check-and-throw ::db/app-db))
     []))
 
 ;; -- Handlers --------------------------------------------------------------
 
 (register-handler
   :initialize-db
-  validate-schema-mw
+  validate-spec-mw
   (fn [_ _]
     app-db))
 
 (register-handler
   :set-greeting
-  validate-schema-mw
+  validate-spec-mw
   (fn [db [_ value]]
-    (assoc db :greeting value)))
\ No newline at end of file
+    (assoc db :greeting value)))
diff --git a/resources/project.clj b/resources/project.clj
index cc1c380..d5844c0 100644
--- a/resources/project.clj
+++ b/resources/project.clj
@@ -3,8 +3,8 @@
             :url "http://example.com/FIXME"
             :license {:name "Eclipse Public License"
                       :url  "http://www.eclipse.org/legal/epl-v10.html"}
-            :dependencies [[org.clojure/clojure "1.8.0"]
-                           [org.clojure/clojurescript "1.8.51"]
+            :dependencies [[org.clojure/clojure "1.9.0-alpha10"]
+                           [org.clojure/clojurescript "1.9.89"]
                            $INTERFACE_DEPS$]
             :plugins [[lein-cljsbuild "1.1.1"]
                       [lein-figwheel "0.5.0-6"]]