diff --git a/Cargo.lock b/Cargo.lock
index 222eab7..0ab6b56 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -106,8 +106,8 @@ dependencies = [
  "reqwest 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.13.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rmpv 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rocket 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rocket_contrib 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocket 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocket_contrib 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -227,8 +227,11 @@ dependencies = [
 
 [[package]]
 name = "crc32fast"
-version = "1.1.1"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "crossbeam-deque"
@@ -573,7 +576,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "h2"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -642,13 +645,13 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.12.16"
+version = "0.12.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "h2 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "h2 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -684,7 +687,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.12.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -801,7 +804,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lazycell"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -850,7 +853,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "crc32fast 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crc32fast 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -973,7 +976,7 @@ dependencies = [
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazycell 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -987,7 +990,7 @@ name = "mio-extras"
 version = "2.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazycell 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1535,7 +1538,7 @@ dependencies = [
  "encoding_rs 0.8.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.12.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper-tls 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libflate 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1582,7 +1585,7 @@ dependencies = [
 
 [[package]]
 name = "rocket"
-version = "0.4.0-rc.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1591,43 +1594,43 @@ dependencies = [
  "memchr 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pear 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rocket_codegen 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rocket_http 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocket_codegen 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocket_http 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "state 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "yansi 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rocket_codegen"
-version = "0.4.0-rc.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "devise 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "rocket_http 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocket_http 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "yansi 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rocket_contrib"
-version = "0.4.0-rc.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "notify 4.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rocket 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocket 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rocket_http"
-version = "0.4.0-rc.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cookie 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2153,7 +2156,7 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.4.9"
+version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2477,7 +2480,7 @@ dependencies = [
 "checksum cookie 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1465f8134efa296b4c19db34d909637cb2bf0f7aaf21299e23e18fa29ac557cf"
 "checksum core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "286e0b41c3a20da26536c6000a280585d519fd07b3956b43aed8a79e9edce980"
 "checksum core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "716c271e8613ace48344f723b60b900a93150271e5be206212d052bbc0883efa"
-"checksum crc32fast 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e0e685559fa8bccfa46afd0f876047ee5d87c536d71d0c2b3a08cc9e880f73eb"
+"checksum crc32fast 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e91d5240c6975ef33aeb5f148f35275c25eda8e8a5f95abe421978b05b8bf192"
 "checksum crossbeam-deque 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4fe1b6f945f824c7a25afe44f62e25d714c0cc523f8e99d8db5cd1026e1269d3"
 "checksum crossbeam-epoch 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2449aaa4ec7ef96e5fb24db16024b935df718e9ae1cec0a1e68feeca2efca7b8"
 "checksum crossbeam-utils 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c55913cc2799171a550e307918c0a360e8c16004820291bf3b638969b4a01816"
@@ -2519,13 +2522,13 @@ dependencies = [
 "checksum gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)" = "8f5f3913fa0bfe7ee1fd8248b6b9f42a5af4b9d65ec2dd2c3c26132b950ecfc2"
 "checksum generic-array 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe043cf9b85297937897087de81f590361686e1ac2d4d471b45435de5dfb6a6"
 "checksum groupable 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "32619942b8be646939eaf3db0602b39f5229b74575b67efc897811ded1db4e57"
-"checksum h2 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "7dd33bafe2e6370e6c8eb0cf1b8c5f93390b90acde7e9b03723f166b28b648ed"
+"checksum h2 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "1ac030ae20dee464c5d0f36544d8b914a6bc606da44a57e052d2b0f5dae129e0"
 "checksum hmac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdb5aa9647ba4711e9d6968dc1c810cd23989ed435443ca962e1bf6d8b8b83ff"
 "checksum hostname 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "21ceb46a83a85e824ef93669c8b390009623863b5c195d1ba747292c0c72f94e"
 "checksum http 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "02096a6d2c55e63f7fcb800690e4f889a25f6ec342e3adb4594e293b625215ab"
 "checksum httparse 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e8734b0cfd3bc3e101ec59100e101c2eecd19282202e87808b3037b442777a83"
 "checksum hyper 0.10.15 (registry+https://github.com/rust-lang/crates.io-index)" = "df0caae6b71d266b91b4a83111a61d2b94ed2e2bea024c532b933dcff867e58c"
-"checksum hyper 0.12.16 (registry+https://github.com/rust-lang/crates.io-index)" = "0aeedb8ca5f0f96be00f84073c6d0d5f962ecad020ef543dff99a7c12717a60e"
+"checksum hyper 0.12.17 (registry+https://github.com/rust-lang/crates.io-index)" = "c49a75385d35ff5e9202755f09beb0b878a05c4c363fcc52b23eeb5dcb6782cc"
 "checksum hyper-sync-rustls 0.3.0-rc.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6d1a443a90413a118ac6739e024f6a5180aa3b3f43f7de65f9d388a961cff19b"
 "checksum hyper-tls 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "32cd73f14ad370d3b4d4b7dce08f69b81536c82e39fcc89731930fe5788cd661"
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
@@ -2540,7 +2543,7 @@ dependencies = [
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a91d884b6667cd606bb5a69aa0c99ba811a115fc68915e7056ec08a46e93199a"
 "checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
-"checksum lazycell 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ddba4c30a78328befecec92fc94970e53b3ae385827d28620f0f5bb2493081e0"
+"checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 "checksum lettre 0.9.0 (git+https://github.com/lettre/lettre?rev=c988b1760ad81)" = "<none>"
 "checksum lettre_email 0.9.0 (git+https://github.com/lettre/lettre?rev=c988b1760ad81)" = "<none>"
 "checksum libc 0.2.44 (registry+https://github.com/rust-lang/crates.io-index)" = "10923947f84a519a45c8fefb7dd1b3e8c08747993381adee176d7a82b4195311"
@@ -2621,10 +2624,10 @@ dependencies = [
 "checksum ring 0.13.5 (registry+https://github.com/rust-lang/crates.io-index)" = "2c4db68a2e35f3497146b7e4563df7d4773a2433230c5e4b448328e31740458a"
 "checksum rmp 0.8.7 (git+https://github.com/dani-garcia/msgpack-rust)" = "<none>"
 "checksum rmpv 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "29af0205707de955a396a1d3c657677c65f791ebabb63c0596c0b2fec0bf6325"
-"checksum rocket 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)" = "eaa997ea8de9b14112aa38b2b6a0ecf3e651ff2c08d2fdf384fa765b5f9c2c98"
-"checksum rocket_codegen 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)" = "fc68f90452ac88c6c1e02a922a0a23ef0ade08f9af899056d0c919b25fa7768c"
-"checksum rocket_contrib 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2cc6a37cb7a6256efe6648f2d0ab9978c49ab883909ea4fabefb81d7c685d841"
-"checksum rocket_http 0.4.0-rc.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c7d555ce896830602aedf4bce2eec8d64713d45a2492c5a3625c3faa5f719b0f"
+"checksum rocket 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "242154377a85c2a9e036fc31ffc8c200b9e1f22a196e47baa3b57716606ca89d"
+"checksum rocket_codegen 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d907d6d458c859651c1cf4c8fa99b77685082bde0561db6a4600b365058f710"
+"checksum rocket_contrib 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f73e161dad5730435f51c815a5c6831d2e57b6b4299b1bf609d31b09aa9a2fa7"
+"checksum rocket_http 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ba9d4f2ce5bba6e1b6d3100493bbad63879e99bbf6b4365d61e6f781daab324d"
 "checksum rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)" = "f76d05d3993fd5f4af9434e8e436db163a12a9d40e1a58a726f27a01dfd12a2a"
 "checksum rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "bcfe5b13211b4d78e5c2cadfebd7769197d95c639c35a50057eb4c05de811395"
 "checksum rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0ceb8ce7a5e520de349e1fa172baeba4a9e8d5ef06c47471863530bc4972ee1e"
@@ -2680,7 +2683,7 @@ dependencies = [
 "checksum tokio-timer 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "4f37f0111d76cc5da132fe9bc0590b9b9cfd079bc7e75ac3846278430a299ff8"
 "checksum tokio-udp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "66268575b80f4a4a710ef83d087fdfeeabdce9b74c797535fbac18a2cb906e92"
 "checksum tokio-uds 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "99ce87382f6c1a24b513a72c048b2c8efe66cb5161c9061d00bee510f08dc168"
-"checksum toml 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)" = "19782e145d5abefb03758958f06ea35f7b1d8421b534140e0238fd3d0bfd66e3"
+"checksum toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "758664fc71a3a69038656bee8b6be6477d2a6c315a6b81f7081f591bffa4111f"
 "checksum traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "efd1f82c56340fdf16f2a953d7bda4f8fdffba13d93b00844c25572110b26079"
 "checksum try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e604eb7b43c06650e854be16a2a03155743d3752dd1c943f6829e26b7a36e382"
 "checksum twoway 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "59b11b2b5241ba34be09c3cc85a36e56e48f9888862e19cedf23336d35316ed1"
diff --git a/Cargo.toml b/Cargo.toml
index d59849a..aa85e6d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,8 +5,8 @@ authors = ["Daniel García <dani-garcia@users.noreply.github.com>"]
 
 [dependencies]
 # Web framework for nightly with a focus on ease-of-use, expressibility, and speed.
-rocket = { version = "0.4.0-rc.2", features = ["tls"], default-features = false }
-rocket_contrib = "0.4.0-rc.2"
+rocket = { version = "0.4.0", features = ["tls"], default-features = false }
+rocket_contrib = "0.4.0"
 
 # HTTP client
 reqwest = "0.9.5"