diff --git a/Cargo.lock b/Cargo.lock
index 4cb1ed2..cd3e22f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,60 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "aead"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fc95d1bdb8e6666b2b217308eeeb09f2d6728d104be3e31916cc74d15420331"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "aes"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "884391ef1066acaa41e766ba8f596341b96e93ce34f9a43e7d24bf0a0eaf0561"
-dependencies = [
- "aes-soft",
- "aesni",
- "cipher",
-]
-
-[[package]]
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-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5278b5fabbb9bd46e24aa69b2fdea62c99088e0a950a9be40e3e0101298f88da"
-dependencies = [
- "aead",
- "aes",
- "cipher",
- "ctr",
- "ghash",
- "subtle",
-]
-
-[[package]]
-name = "aes-soft"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be14c7498ea50828a38d0e24a765ed2effe92a705885b57d029cd67d45744072"
-dependencies = [
- "cipher",
- "opaque-debug",
-]
-
-[[package]]
-name = "aesni"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea2e11f5e94c2f7d386164cc2aa1f97823fed6f259e486940a71c174dd01b0ce"
-dependencies = [
- "cipher",
- "opaque-debug",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "0.7.15"
@@ -65,15 +11,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
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-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-dependencies = [
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "anyhow"
 version = "1.0.40"
@@ -88,7 +25,7 @@ checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 dependencies = [
  "hermit-abi",
  "libc",
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -113,12 +50,6 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
 
-[[package]]
-name = "base64"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
-
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -140,40 +71,21 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
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-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12f8e7987cbd042a63249497f41aed09f8e65add917ea6566effbc56578d6801"
-dependencies = [
- "generic-array",
-]
-
 [[package]]
 name = "clap"
 version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
 dependencies = [
- "ansi_term",
- "atty",
  "bitflags",
- "strsim",
  "textwrap",
  "unicode-width",
- "vec_map",
 ]
 
 [[package]]
@@ -182,13 +94,7 @@ version = "0.11.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "80f6044740a4a516b8aac14c140cdf35c1a640b1bd6b98b6224e49143b2f1566"
 dependencies = [
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- "base64 0.13.0",
- "hkdf",
- "hmac",
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- "rand",
- "sha2",
  "time",
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@@ -198,12 +104,6 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8aebca1129a03dc6dc2b127edd729435bbc4a37e1d5f4d7513165089ceb02634"
 
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-
 [[package]]
 name = "crypto-mac"
 version = "0.10.0"
@@ -214,15 +114,6 @@ dependencies = [
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 ]
 
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb4a30d54f7443bf3d6191dcd486aca19e67cb3c49fa7a06a319966346707e7f"
-dependencies = [
- "cipher",
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-
 [[package]]
 name = "devise"
 version = "0.2.0"
@@ -270,53 +161,6 @@ version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56899898ce76aaf4a0f24d914c97ea6ed976d42fec6ad33fcbb0a1103e07b2b0"
 
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-dependencies = [
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-
 [[package]]
 name = "generic-array"
 version = "0.14.4"
@@ -327,27 +171,6 @@ dependencies = [
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 ]
 
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-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
-dependencies = [
- "cfg-if 1.0.0",
- "libc",
- "wasi",
-]
-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "opaque-debug",
- "polyval",
-]
-
 [[package]]
 name = "glob"
 version = "0.3.0"
@@ -375,16 +198,6 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
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-name = "hkdf"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51ab2f639c231793c5f6114bdb9bbe50a7dbbfcd7c7c6bd8475dec2d991e964f"
-dependencies = [
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- "hmac",
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-
 [[package]]
 name = "hmac"
 version = "0.10.1"
@@ -441,63 +254,18 @@ dependencies = [
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 ]
 
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-name = "inotify"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4816c66d2c8ae673df83366c18341538f234a26d65a9ecea5c348b453ac1d02f"
-dependencies = [
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- "inotify-sys",
- "libc",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "libc",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
-dependencies = [
- "libc",
-]
-
 [[package]]
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 checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
-[[package]]
-name = "kernel32-sys"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
-
 [[package]]
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-name = "lazycell"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
-
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 name = "libc"
 version = "0.2.92"
@@ -525,7 +293,7 @@ version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
 ]
 
 [[package]]
@@ -539,7 +307,6 @@ dependencies = [
  "log 0.4.14",
  "regex",
  "rocket",
- "rocket_contrib",
  "serde",
  "serde_json",
  "serde_regex",
@@ -568,78 +335,6 @@ dependencies = [
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 ]
 
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-version = "0.6.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4afd66f5b91bf2a3bc13fad0e21caedac168ca4c707504e75585648ae80e4cc4"
-dependencies = [
- "cfg-if 0.1.10",
- "fuchsia-zircon",
- "fuchsia-zircon-sys",
- "iovec",
- "kernel32-sys",
- "libc",
- "log 0.4.14",
- "miow",
- "net2",
- "slab",
- "winapi 0.2.8",
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-
-[[package]]
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-dependencies = [
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- "log 0.4.14",
- "mio",
- "slab",
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "winapi 0.2.8",
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "libc",
- "winapi 0.3.9",
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "filetime",
- "fsevent",
- "fsevent-sys",
- "inotify",
- "libc",
- "mio",
- "mio-extras",
- "walkdir",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -690,23 +385,6 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "opaque-debug",
- "universal-hash",
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
-
 [[package]]
 name = "proc-macro2"
 version = "0.4.30"
@@ -743,55 +421,6 @@ dependencies = [
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 ]
 
-[[package]]
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-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "rand_chacha",
- "rand_core",
- "rand_hc",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
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- "rand_core",
-]
-
-[[package]]
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-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
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-]
-
-[[package]]
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-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
-dependencies = [
- "rand_core",
-]
-
-[[package]]
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-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94341e4e44e24f6b591b59e47a8a027df12e008d73fd5672dbea9cc22f4507d9"
-dependencies = [
- "bitflags",
-]
-
 [[package]]
 name = "regex"
 version = "1.4.5"
@@ -845,19 +474,6 @@ dependencies = [
  "yansi",
 ]
 
-[[package]]
-name = "rocket_contrib"
-version = "0.4.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7954a707f9ca18aa74ca8c1f5d1f900f52a4dceb68e96e3112143f759cfd20e"
-dependencies = [
- "log 0.4.14",
- "notify",
- "rocket",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "rocket_http"
 version = "0.4.7"
@@ -887,15 +503,6 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef703b7cb59335eae2eb93ceb664c0eb7ea6bf567079d843e09420219668e072"
 
-[[package]]
-name = "same-file"
-version = "1.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
-dependencies = [
- "winapi-util",
-]
-
 [[package]]
 name = "serde"
 version = "1.0.125"
@@ -956,18 +563,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fa827a14b29ab7f44778d14a88d3cb76e949c45083f7dbfa507d0cb699dc12de"
 dependencies = [
  "block-buffer",
- "cfg-if 1.0.0",
- "cpuid-bool 0.1.2",
+ "cfg-if",
+ "cpuid-bool",
  "digest",
  "opaque-debug",
 ]
 
-[[package]]
-name = "slab"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
-
 [[package]]
 name = "smallvec"
 version = "1.6.1"
@@ -980,12 +581,6 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3015a7d0a5fd5105c91c3710d42f9ccf0abfb287d62206484dcc67f9569a6483"
 
-[[package]]
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-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-
 [[package]]
 name = "subtle"
 version = "2.4.0"
@@ -1030,7 +625,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
 dependencies = [
  "libc",
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -1120,16 +715,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
 
-[[package]]
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-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8326b2c654932e3e4f9196e69d08fdf7cfd718e1dc6f66b347e6024a0c961402"
-dependencies = [
- "generic-array",
- "subtle",
-]
-
 [[package]]
 name = "url"
 version = "1.7.2"
@@ -1141,12 +726,6 @@ dependencies = [
  "percent-encoding 1.0.1",
 ]
 
-[[package]]
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-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
-
 [[package]]
 name = "version_check"
 version = "0.1.5"
@@ -1159,29 +738,6 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
 
-[[package]]
-name = "walkdir"
-version = "2.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "808cf2735cd4b6866113f648b791c6adc5714537bc222d9347bb203386ffda56"
-dependencies = [
- "same-file",
- "winapi 0.3.9",
- "winapi-util",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
-
-[[package]]
-name = "winapi"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1192,43 +748,18 @@ dependencies = [
  "winapi-x86_64-pc-windows-gnu",
 ]
 
-[[package]]
-name = "winapi-build"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
-
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
-[[package]]
-name = "winapi-util"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
-dependencies = [
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
-[[package]]
-name = "ws2_32-sys"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
-
 [[package]]
 name = "yaml-rust"
 version = "0.4.5"
diff --git a/Cargo.toml b/Cargo.toml
index 6b81399..6af939b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,15 +12,22 @@ repository = "https://github.com/alarsyo/lohr"
 
 [dependencies]
 anyhow = "1.0.40"
-clap = "2.33.3"
 hex = "0.4.3"
 hmac = "0.10.1"
 log = "0.4.14"
 regex = "1"
-rocket = "0.4.7"
-rocket_contrib = { version = "0.4.7", features = [ "json" ] }
 serde = { version = "1.0.125", features = [ "derive" ] }
 serde_json = "1.0.64"
 serde_regex = "1.1.0"
 serde_yaml = "0.8.17"
 sha2 = "0.9.3"
+
+[dependencies.rocket]
+version = "0.4.7"
+# don't need private-cookies
+default-features = false
+
+[dependencies.clap]
+version = "2.33.3"
+# no need for suggestions or color with only one argument
+default-features = false