diff --git a/Cargo.lock b/Cargo.lock
index 8794f71..4ee865c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 4
+
 [[package]]
 name = "adler32"
 version = "1.0.4"
@@ -156,7 +158,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4ed64ae6d9ebfd9893193c4b2532b1292ec97bd8271c9d7d0fa90cd78a34cba"
 dependencies = [
  "backtrace-sys",
- "cfg-if",
+ "cfg-if 0.1.9",
  "libc",
  "rustc-demangle",
 ]
@@ -252,12 +254,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "bumpalo"
-version = "3.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e8c087f005730276d1096a652e92a8bacee2e2472bcc9715a74d2bec38b5820"
-
 [[package]]
 name = "byte-tools"
 version = "0.2.0"
@@ -283,9 +279,13 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.59"
+version = "1.2.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66120af515773fb005778dc07c261bd201ec8ce50bd6e7144c927753fe013381"
+checksum = "a1dce859f0832a7d088c4f1119888ab94ef4b5d6795d1ce05afb7fe159d79f98"
+dependencies = [
+ "find-msvc-tools",
+ "shlex",
+]
 
 [[package]]
 name = "centerdevice-watchtower"
@@ -322,6 +322,12 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
 [[package]]
 name = "chrono"
 version = "0.4.11"
@@ -480,7 +486,7 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba125de2af0df55319f41944744ad91c71113bf74a4646efff39afe1f6842db1"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
 ]
 
 [[package]]
@@ -501,7 +507,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
 dependencies = [
  "autocfg 1.0.0",
- "cfg-if",
+ "cfg-if 0.1.9",
  "crossbeam-utils",
  "lazy_static 1.4.0",
  "maybe-uninit",
@@ -515,7 +521,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c695eeca1e7173472a32221542ae469b3e9aac3a4fc81f7696bcad82029493db"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "crossbeam-utils",
 ]
 
@@ -526,7 +532,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
 dependencies = [
  "autocfg 1.0.0",
- "cfg-if",
+ "cfg-if 0.1.9",
  "lazy_static 1.4.0",
 ]
 
@@ -588,7 +594,7 @@ version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fddc3610d8f9552384e06ebc87f714e1d0b2b64a99194d2faf36d7ae5f48549"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "dirs-sys",
 ]
 
@@ -659,7 +665,7 @@ version = "0.8.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd8d03faa7fe0c1431609dfad7bbe827af30f82e1e2ae6f7ee4fca6bd764bc28"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
 ]
 
 [[package]]
@@ -732,13 +738,19 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "find-msvc-tools"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
+
 [[package]]
 name = "flate2"
 version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2cfff41391129e0a856d6d822600b8d71179d46879e310417eb9c762eb178b42"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "crc32fast",
  "libc",
  "miniz_oxide",
@@ -827,9 +839,20 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
+ "libc",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
+dependencies = [
+ "cfg-if 1.0.4",
  "libc",
- "wasi",
+ "wasi 0.11.1+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -1050,15 +1073,6 @@ version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8b7a7c0c47db5545ed3fef7468ee7bb5b74691498139e4b3f6a20685dc6dd8e"
 
-[[package]]
-name = "js-sys"
-version = "0.3.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85a7e2c92a4804dd459b86c339278d0fe87cf93757fae222c3fa3ae75458bc73"
-dependencies = [
- "wasm-bindgen",
-]
-
 [[package]]
 name = "kernel32-sys"
 version = "0.2.2"
@@ -1142,9 +1156,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.69"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
 name = "linreg"
@@ -1171,7 +1185,7 @@ version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
 ]
 
 [[package]]
@@ -1238,7 +1252,7 @@ version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "302dec22bcf6bae6dfb69c647187f4b4d0fb6f535521f7bc022430ce8e12008f"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "fuchsia-zircon",
  "fuchsia-zircon-sys",
  "iovec",
@@ -1298,7 +1312,7 @@ version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "libc",
  "winapi 0.3.8",
 ]
@@ -1391,12 +1405,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "260e51e7efe62b592207e9e13a68e43692a7a279171d6ba57abd208bf23645ad"
-
 [[package]]
 name = "openssl"
 version = "0.10.29"
@@ -1404,7 +1412,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cee6d85f4cb4c4f59a6a85d5b68a233d280c82e29e822913b9c8b129fbf20bdd"
 dependencies = [
  "bitflags",
- "cfg-if",
+ "cfg-if 0.1.9",
  "foreign-types",
  "lazy_static 1.4.0",
  "libc",
@@ -1457,7 +1465,7 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b876b1b9e7ac6e1a74a6da34d25c42e17e8862aa409cbbbdcfc8d86c6f3bc62b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "cloudabi",
  "libc",
  "redox_syscall",
@@ -1472,7 +1480,7 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0e136c1904604defe99ce5fd71a28d473fa60a12255d511aa78a9ddf11237aeb"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "cloudabi",
  "libc",
  "redox_syscall",
@@ -1629,7 +1637,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
  "libc",
  "rand_chacha 0.2.2",
  "rand_core 0.5.1",
@@ -1677,7 +1685,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
 ]
 
 [[package]]
@@ -1772,7 +1780,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09b23093265f8d200fa7b4c2c76297f47e681c655f6f1285a8780d6a022f7431"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
  "redox_syscall",
  "rust-argon2",
 ]
@@ -1871,17 +1879,16 @@ dependencies = [
 
 [[package]]
 name = "ring"
-version = "0.16.15"
+version = "0.17.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "952cd6b98c85bbc30efa1ba5783b8abf12fec8b3287ffa52605b9432313e34e4"
+checksum = "70ac5d832aa16abd7d1def883a8545280c20a60f523a370aa3a9617c2b8550ee"
 dependencies = [
  "cc",
+ "cfg-if 1.0.4",
+ "getrandom 0.2.17",
  "libc",
- "once_cell",
- "spin",
  "untrusted",
- "web-sys",
- "winapi 0.3.8",
+ "windows-sys",
 ]
 
 [[package]]
@@ -2188,6 +2195,12 @@ dependencies = [
  "fake-simd",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "simple_logger"
 version = "1.6.0"
@@ -2231,12 +2244,6 @@ dependencies = [
  "num",
 ]
 
-[[package]]
-name = "spin"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
-
 [[package]]
 name = "string"
 version = "0.2.1"
@@ -2346,7 +2353,7 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
  "libc",
  "rand 0.7.3",
  "redox_syscall",
@@ -2641,7 +2648,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "283d3b89e1368717881a9d51dad843cc435380d8109c9e47d38780a324698d8b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.9",
 ]
 
 [[package]]
@@ -2709,9 +2716,9 @@ checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 
 [[package]]
 name = "untrusted"
-version = "0.7.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
 [[package]]
 name = "url"
@@ -2796,68 +2803,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
-name = "wasm-bindgen"
-version = "0.2.67"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0563a9a4b071746dd5aedbc3a28c6fe9be4586fb3fbadb67c400d4f53c6b16c"
-dependencies = [
- "cfg-if",
- "wasm-bindgen-macro",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.67"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc71e4c5efa60fb9e74160e89b93353bc24059999c0ae0fb03affc39770310b0"
-dependencies = [
- "bumpalo",
- "lazy_static 1.4.0",
- "log",
- "proc-macro2 1.0.19",
- "quote 1.0.3",
- "syn 1.0.39",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-macro"
-version = "0.2.67"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97c57cefa5fa80e2ba15641578b44d36e7a64279bc5ed43c6dbaf329457a2ed2"
-dependencies = [
- "quote 1.0.3",
- "wasm-bindgen-macro-support",
-]
-
-[[package]]
-name = "wasm-bindgen-macro-support"
-version = "0.2.67"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "841a6d1c35c6f596ccea1f82504a192a60378f64b3bb0261904ad8f2f5657556"
-dependencies = [
- "proc-macro2 1.0.19",
- "quote 1.0.3",
- "syn 1.0.39",
- "wasm-bindgen-backend",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-shared"
-version = "0.2.67"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93b162580e34310e5931c4b792560108b10fd14d64915d7fff8ff00180e70092"
-
-[[package]]
-name = "web-sys"
-version = "0.3.44"
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dda38f4e5ca63eda02c059d243aa25b5f35ab98451e518c51612cd0f1bd19a47"
-dependencies = [
- "js-sys",
- "wasm-bindgen",
-]
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
 [[package]]
 name = "winapi"
@@ -2902,6 +2851,79 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
 [[package]]
 name = "winreg"
 version = "0.6.2"
diff --git a/duo/Cargo.toml b/duo/Cargo.toml
index cd686c9..d13c5f0 100644
--- a/duo/Cargo.toml
+++ b/duo/Cargo.toml
@@ -17,7 +17,7 @@ failure_derive = "0.1"
 hex = "0.4"
 log = "0.4"
 reqwest = "0.9"
-ring = "0.16"
+ring = "0.17"
 serde = "1"
 serde_derive = "1"
 serde_json = "1"