diff --git a/2015/rust/Cargo.lock b/2015/rust/Cargo.lock
index c2e2a06..0dc18ce 100644
--- a/2015/rust/Cargo.lock
+++ b/2015/rust/Cargo.lock
@@ -1,146 +1,145 @@
-[root]
-name = "advent_of_code"
-version = "0.1.0"
-dependencies = [
- "permutohedron 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.44 (registry+https://github.com/rust-lang/crates.io-index)",
- "rust-crypto 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
-]
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
 
 [[package]]
 name = "advapi32-sys"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "307c92332867e586720c0222ee9d890bbe8431711efed8a1b06bc5b40fc66bd7"
 dependencies = [
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi",
+ "winapi-build",
+]
+
+[[package]]
+name = "advent_of_code"
+version = "0.1.0"
+dependencies = [
+ "permutohedron",
+ "regex",
+ "rust-crypto",
 ]
 
 [[package]]
 name = "aho-corasick"
-version = "0.4.0"
+version = "0.7.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
 dependencies = [
- "memchr 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr",
 ]
 
 [[package]]
 name = "gcc"
 version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca10e3e1f1c8278047da19b94dc17c4397861150d5fbcea052eedb1d9847d356"
 dependencies = [
- "advapi32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "advapi32-sys",
+ "winapi",
 ]
 
 [[package]]
 name = "kernel32-sys"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5b5e7edf375e6d26243bde172f1d5ed1446f4a766fc9b7006e1fd27258243f1"
 dependencies = [
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi",
+ "winapi-build",
 ]
 
 [[package]]
 name = "libc"
 version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e32a70cf75e5846d53a673923498228bbec6a8624708a9ea5645f075d6276122"
 
 [[package]]
 name = "libc"
 version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10569e57695cc2c91ca4214357907649c9e242dc822c9ae623d0e0b0d68aa4d9"
 
 [[package]]
 name = "memchr"
-version = "0.1.7"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
 [[package]]
 name = "permutohedron"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abf78a1e8b52782de92fc4f361362a62bcf5fd5718b5432b48cb381485740b83"
 
 [[package]]
 name = "rand"
 version = "0.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5eee40bdf3d293e1648490ab47e5471d9ab3e455e6b0bd48e558c454be4a015e"
 dependencies = [
- "advapi32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "advapi32-sys",
+ "libc 0.2.4",
+ "winapi",
 ]
 
 [[package]]
 name = "regex"
-version = "0.1.44"
+version = "1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
 dependencies = [
- "aho-corasick 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
 ]
 
 [[package]]
 name = "regex-syntax"
-version = "0.2.2"
+version = "0.6.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49b3de9ec5dc0a3417da371aab17d729997c15010e7fd24ff707773a33bddb64"
 
 [[package]]
 name = "rust-crypto"
 version = "0.2.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8672a8eb8db93d0938972e391159ba66912b415285ee5cf0ebe732df9e53b70"
 dependencies = [
- "gcc 0.3.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc",
+ "libc 0.1.12",
+ "rand",
+ "rustc-serialize",
+ "time",
 ]
 
 [[package]]
 name = "rustc-serialize"
 version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a48546a64cae47d06885e9bccadb99d0547d877a94c5167fa451ea33a484456"
 
 [[package]]
 name = "time"
 version = "0.1.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c4aeaa1c95974f5763c3a5ac0db95a19793589bcea5d22e161b5587e3aad029"
 dependencies = [
- "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "kernel32-sys",
+ "libc 0.2.4",
+ "winapi",
 ]
 
 [[package]]
 name = "winapi"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc3583688b861fcd83c2823d37cf2cd2446c233dd7ba3f97884d1a7302817537"
 
 [[package]]
 name = "winapi-build"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[metadata]
-"checksum advapi32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "307c92332867e586720c0222ee9d890bbe8431711efed8a1b06bc5b40fc66bd7"
-"checksum aho-corasick 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8f36f237c490deb976b38aca6369182dceb5a7af249aabf41c0ba5a964bac5ed"
-"checksum gcc 0.3.21 (registry+https://github.com/rust-lang/crates.io-index)" = "ca10e3e1f1c8278047da19b94dc17c4397861150d5fbcea052eedb1d9847d356"
-"checksum kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b5b5e7edf375e6d26243bde172f1d5ed1446f4a766fc9b7006e1fd27258243f1"
-"checksum libc 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "e32a70cf75e5846d53a673923498228bbec6a8624708a9ea5645f075d6276122"
-"checksum libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "10569e57695cc2c91ca4214357907649c9e242dc822c9ae623d0e0b0d68aa4d9"
-"checksum memchr 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "dc66b0957bf6ae6590681ceac49b0df16823d43037d49aaf2ee658d483af30ab"
-"checksum permutohedron 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "abf78a1e8b52782de92fc4f361362a62bcf5fd5718b5432b48cb381485740b83"
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-"checksum regex-syntax 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "fcf1e805b0a23c845be2a303136d840a1511284727bc1f1fc32d079552ef901f"
-"checksum rust-crypto 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)" = "b8672a8eb8db93d0938972e391159ba66912b415285ee5cf0ebe732df9e53b70"
-"checksum rustc-serialize 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)" = "1a48546a64cae47d06885e9bccadb99d0547d877a94c5167fa451ea33a484456"
-"checksum time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)" = "8c4aeaa1c95974f5763c3a5ac0db95a19793589bcea5d22e161b5587e3aad029"
-"checksum winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "dc3583688b861fcd83c2823d37cf2cd2446c233dd7ba3f97884d1a7302817537"
-"checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
diff --git a/2015/rust/Cargo.toml b/2015/rust/Cargo.toml
index 53c1691..b58043c 100644
--- a/2015/rust/Cargo.toml
+++ b/2015/rust/Cargo.toml
@@ -4,6 +4,6 @@ version = "0.1.0"
 authors = ["Alpha Chen <alpha.chen@gmail.com>"]
 
 [dependencies]
-regex = "0.1"
+regex = "1.5"
 rust-crypto = "^0.2"
 permutohedron = "0.2"