diff --git a/benches/buffer_bench.js b/benches/buffer_bench.js
index a504fbc087..df16d90bf4 100644
--- a/benches/buffer_bench.js
+++ b/benches/buffer_bench.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var source = new Buffer(100),
     dest = new Buffer(100), i, j, k, tmp, count = 1000000, bytes = 100;
     
diff --git a/benches/hiredis_parser.js b/benches/hiredis_parser.js
index f1515b110b..489a4912e2 100644
--- a/benches/hiredis_parser.js
+++ b/benches/hiredis_parser.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var Parser = require('../lib/parser/hiredis').Parser;
 var assert = require('assert');
 
diff --git a/benches/re_sub_test.js b/benches/re_sub_test.js
index 64b8f31287..256d0d0d1d 100644
--- a/benches/re_sub_test.js
+++ b/benches/re_sub_test.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var client = require('../index').createClient()
   , client2 = require('../index').createClient()
   , assert = require('assert');
diff --git a/benches/reconnect_test.js b/benches/reconnect_test.js
index 7abdd51665..7556ea430a 100644
--- a/benches/reconnect_test.js
+++ b/benches/reconnect_test.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("../index").createClient(null, null, {
 //    max_attempts: 4
 });
diff --git a/benches/stress/codec.js b/benches/stress/codec.js
index 7d764f6072..c679a6ee01 100644
--- a/benches/stress/codec.js
+++ b/benches/stress/codec.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var json = {
 	encode: JSON.stringify,
 	decode: JSON.parse
diff --git a/benches/stress/speed/speed.js b/benches/stress/speed/speed.js
index 8e43cbc03b..93d54f0c13 100644
--- a/benches/stress/speed/speed.js
+++ b/benches/stress/speed/speed.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var msgpack = require('node-msgpack');
 var bison = require('bison');
 var codec = {
diff --git a/benches/sub_quit_test.js b/benches/sub_quit_test.js
index ad1f413228..ae3725a999 100644
--- a/benches/sub_quit_test.js
+++ b/benches/sub_quit_test.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var client = require("redis").createClient(),
     client2 = require("redis").createClient();
 
diff --git a/connection_breaker.js b/connection_breaker.js
index 489f5d5645..f2db0eb1b6 100644
--- a/connection_breaker.js
+++ b/connection_breaker.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var net = require('net');
 
 var proxyPort = 6379;
diff --git a/diff_multi_bench_output.js b/diff_multi_bench_output.js
index 7396472019..23cb3ada21 100755
--- a/diff_multi_bench_output.js
+++ b/diff_multi_bench_output.js
@@ -1,5 +1,7 @@
 #!/usr/bin/env node
 
+'use strict';
+
 var colors = require('colors'),
     fs = require('fs'),
     _ = require('underscore'),
diff --git a/examples/auth.js b/examples/auth.js
index 6c0a563cd8..275c40961e 100644
--- a/examples/auth.js
+++ b/examples/auth.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis  = require("redis"),
     client = redis.createClient();
 
diff --git a/examples/backpressure_drain.js b/examples/backpressure_drain.js
index 3488ef4d3f..74107bb6a0 100644
--- a/examples/backpressure_drain.js
+++ b/examples/backpressure_drain.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("../index"),
     client = redis.createClient(null, null, {
         command_queue_high_water: 5,
diff --git a/examples/eval.js b/examples/eval.js
index a3ff6b0793..0ec1c215e9 100644
--- a/examples/eval.js
+++ b/examples/eval.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("../index"),
     client = redis.createClient();
 
diff --git a/examples/extend.js b/examples/extend.js
index 488b8c2dc5..b3a10fa716 100644
--- a/examples/extend.js
+++ b/examples/extend.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("redis"),
     client = redis.createClient();
 
diff --git a/examples/file.js b/examples/file.js
index 4d2b5d1c98..9197019858 100644
--- a/examples/file.js
+++ b/examples/file.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Read a file from disk, store it in Redis, then read it back from Redis.
 
 var redis = require("redis"),
diff --git a/examples/mget.js b/examples/mget.js
index 936740d32f..30f2bce90a 100644
--- a/examples/mget.js
+++ b/examples/mget.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var client = require("redis").createClient();
 
 client.mget(["sessions started", "sessions started", "foo"], function (err, res) {
diff --git a/examples/monitor.js b/examples/monitor.js
index 2cb6a4e1ec..c67f596294 100644
--- a/examples/monitor.js
+++ b/examples/monitor.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var client  = require("../index").createClient(),
     util = require("util");
 
diff --git a/examples/multi.js b/examples/multi.js
index 35c08e1840..31bc14ffb0 100644
--- a/examples/multi.js
+++ b/examples/multi.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis  = require("redis"),
     client = redis.createClient(), set_size = 20;
 
diff --git a/examples/multi2.js b/examples/multi2.js
index 8be4d7313c..da722b23bb 100644
--- a/examples/multi2.js
+++ b/examples/multi2.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis  = require("redis"),
     client = redis.createClient(), multi;
 
diff --git a/examples/psubscribe.js b/examples/psubscribe.js
index c57117b8a6..f46d235bed 100644
--- a/examples/psubscribe.js
+++ b/examples/psubscribe.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("redis"),
     client1 = redis.createClient(),
     client2 = redis.createClient(),
diff --git a/examples/pub_sub.js b/examples/pub_sub.js
index aa508d6c9d..3446a552d1 100644
--- a/examples/pub_sub.js
+++ b/examples/pub_sub.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("redis"),
     client1 = redis.createClient(), msg_count = 0,
     client2 = redis.createClient();
diff --git a/examples/scan.js b/examples/scan.js
index 0302843a76..f4aac2ef4d 100644
--- a/examples/scan.js
+++ b/examples/scan.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis  = require("redis"),
     client = redis.createClient();
 
diff --git a/examples/simple.js b/examples/simple.js
index f1f2e3209b..e832749895 100644
--- a/examples/simple.js
+++ b/examples/simple.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("redis"),
     client = redis.createClient();
 
diff --git a/examples/sort.js b/examples/sort.js
index e7c6249e40..4c804bee1d 100644
--- a/examples/sort.js
+++ b/examples/sort.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("redis"),
     client = redis.createClient();
 
diff --git a/examples/subqueries.js b/examples/subqueries.js
index 560db2404e..ebae6d4855 100644
--- a/examples/subqueries.js
+++ b/examples/subqueries.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Sending commands in response to other commands.
 // This example runs "type" against every key in the database
 //
diff --git a/examples/subquery.js b/examples/subquery.js
index 861657e1f3..4f1edb0ffd 100644
--- a/examples/subquery.js
+++ b/examples/subquery.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var client = require("redis").createClient();
 
 function print_results(obj) {
diff --git a/examples/web_server.js b/examples/web_server.js
index 9fd85923de..dfd420bd1a 100644
--- a/examples/web_server.js
+++ b/examples/web_server.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // A simple web server that generates dyanmic content based on responses from Redis
 
 var http = require("http"), server,
@@ -7,9 +9,9 @@ server = http.createServer(function (request, response) {
     response.writeHead(200, {
         "Content-Type": "text/plain"
     });
-    
+
     var redis_info, total_requests;
-    
+
     redis_client.info(function (err, reply) {
         redis_info = reply; // stash response in outer scope
     });
diff --git a/generate_commands.js b/generate_commands.js
index e6949d3a14..3ad420edc3 100644
--- a/generate_commands.js
+++ b/generate_commands.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var http = require("http"),
     fs = require("fs");
 
diff --git a/index.js b/index.js
index 770987beb1..6c70a25129 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*global Buffer require exports console setTimeout */
 
 var net = require("net"),
diff --git a/lib/commands.js b/lib/commands.js
index b0365350cd..3b01543d99 100644
--- a/lib/commands.js
+++ b/lib/commands.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // This file was generated by ./generate_commands.js on Wed Apr 23 2014 14:51:21 GMT-0700 (PDT)
 module.exports = [
     "append",
diff --git a/lib/parser/hiredis.js b/lib/parser/hiredis.js
index 940bfeeb76..29dbfd59a9 100644
--- a/lib/parser/hiredis.js
+++ b/lib/parser/hiredis.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var events = require("events"),
     util = require("../util"),
     hiredis = require("hiredis");
diff --git a/lib/parser/javascript.js b/lib/parser/javascript.js
index 0990cc098d..5ad0436215 100644
--- a/lib/parser/javascript.js
+++ b/lib/parser/javascript.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var events = require("events"),
     util   = require("../util");
 
diff --git a/lib/queue.js b/lib/queue.js
index 0d258cdfcb..d2eb17e56c 100644
--- a/lib/queue.js
+++ b/lib/queue.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Queue class adapted from Tim Caswell's pattern library
 // http://github.com/creationix/pattern/blob/master/lib/pattern/queue.js
 
diff --git a/lib/to_array.js b/lib/to_array.js
index 88a57e18a4..87804f8c3b 100644
--- a/lib/to_array.js
+++ b/lib/to_array.js
@@ -1,3 +1,5 @@
+'use strict';
+
 function to_array(args) {
     var len = args.length,
         arr = new Array(len), i;
diff --git a/lib/util.js b/lib/util.js
index fc255ae953..359cd7e948 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Support for very old versions of node where the module was called "sys".  At some point, we should abandon this.
 
 var util;
diff --git a/multi_bench.js b/multi_bench.js
index dbe04e515a..4e99376787 100644
--- a/multi_bench.js
+++ b/multi_bench.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var redis = require("./index"),
     metrics = require("metrics"),
     num_clients = parseInt(process.argv[2], 10) || 5,
diff --git a/test/queue-test.js b/test/queue-test.js
index 017ea60785..4811eca90a 100644
--- a/test/queue-test.js
+++ b/test/queue-test.js
@@ -1,3 +1,5 @@
+'use strict';
+
 var assert = require("assert");
 var Queue = require('../lib/queue');
 
diff --git a/test/test.js b/test/test.js
index e7db763914..325ea13658 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*global require console setTimeout process Buffer */
 var PORT = 6379;
 var HOST = '127.0.0.1';