diff --git a/rebar.config b/rebar.config
index e805dba6..0a3a2302 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,3 +1,7 @@
+{deps, [
+    {triq, ".*", {git, "git://github.com/krestenkrab/triq.git", "master"}}
+]}.
+
 {port_specs, [
     {"priv/jiffy.so", [
         "c_src/*.c",
diff --git a/rebar.config.script b/rebar.config.script
deleted file mode 100644
index e5f561d8..00000000
--- a/rebar.config.script
+++ /dev/null
@@ -1,37 +0,0 @@
-% This file is part of Jiffy released under the MIT license.
-% See the LICENSE file for more information.
-
-% Only include PropEr as a dependency when the JIFFY_DEV
-% environment variable is defined. This allows downstream
-% applications to avoid requiring PropEr.
-%
-% This script is based on the example provided with Rebar.
-
-ErlOpts = [{d, 'JIFFY_DEV'}],
-
-Proper = [
-    {proper, ".*", {git, "git://github.com/manopapad/proper.git", "master"}}
-],
-
-ConfigPath = filename:dirname(SCRIPT),
-DevMarker = filename:join([ConfigPath, ".jiffy.dev"]),
-
-case filelib:is_file(DevMarker) orelse os:getenv("TRAVIS") == "true" of
-    true ->
-        % Don't override existing dependencies
-        Config0 = case lists:keyfind(deps, 1, CONFIG) of
-            false ->
-                CONFIG ++ [{deps, Proper}];
-            {deps, DepsList} ->
-                lists:keyreplace(deps, 1, CONFIG, {deps, DepsList ++ Proper})
-        end,
-        Config1 = case lists:keyfind(erl_opts, 1, Config0) of
-            false ->
-                Config0 ++ [{erl_opts, ErlOpts}];
-            {erl_opts, Opts} ->
-                NewOpts = {erl_opts, Opts ++ ErlOpts},
-                lists:keyreplace(erl_opts, 1, Config0, NewOpts)
-        end;
-    false ->
-        CONFIG
-end.
diff --git a/test/jiffy_11_proper_tests.erl b/test/jiffy_11_proper_tests.erl
index 2c254bff..45defc4e 100644
--- a/test/jiffy_11_proper_tests.erl
+++ b/test/jiffy_11_proper_tests.erl
@@ -3,21 +3,15 @@
 
 -module(jiffy_11_proper_tests).
 
--ifdef(JIFFY_DEV).
 
--include_lib("proper/include/proper.hrl").
+-include_lib("triq/include/triq.hrl").
 -include_lib("eunit/include/eunit.hrl").
 -include("jiffy_util.hrl").
 
-opts() ->
-    [
-        {max_size, 15},
-        {numtests, 1000}
-    ].
 
 run(Name) ->
     {msg("~s", [Name]), [
-        {timeout, 300, ?_assert(proper:quickcheck(?MODULE:Name(), opts()))}
+        {timeout, 300, ?_assert(triq:check(?MODULE:Name(), 10))}
     ]}.
 
 proper_encode_decode_test_() ->
@@ -84,7 +78,7 @@ json_boolean() ->
 
 
 json_number() ->
-    oneof([integer(), float()]).
+    oneof([int(), real()]).
 
 
 json_string() ->
@@ -96,7 +90,7 @@ json_list(S) when S =< 0 ->
 json_list(S) ->
     ?LETSHRINK(
         [ListSize],
-        [integer(0, S)],
+        [int(0, S)],
         vector(ListSize, json_text(S - ListSize))
     ).
 
@@ -106,7 +100,7 @@ json_object(S) when S =< 0 ->
 json_object(S) ->
     ?LETSHRINK(
         [ObjectSize],
-        [integer(0, S)],
+        [int(0, S)],
         {vector(ObjectSize, {json_string(), json_text(S - ObjectSize)})}
     ).
 
@@ -121,7 +115,7 @@ json_value() ->
 
 
 json_text(S) when S > 0 ->
-    ?LAZY(oneof([
+    ?DELAY(oneof([
         json_list(S),
         json_object(S)
     ]));
@@ -151,7 +145,7 @@ escaped_utf8_bin() ->
 
 
 escaped_char() ->
-    ?LET(C, char(),
+    ?LET(C, unicode_char(),
         case C of
             $" -> "\\\"";
             C when C == 65534 -> 65533;
@@ -160,5 +154,3 @@ escaped_char() ->
             C -> C
         end
     ).
-
--endif.