diff --git a/Cargo.lock b/Cargo.lock
index 304dde9..6544544 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -193,11 +193,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e69e13a99a7e6e070bb114f7ff381e58c7ccc188630121fc4c2fe4bcf24cd072"
 dependencies = [
  "flate2",
- "http 0.2.7",
+ "http",
  "log",
  "native-tls",
  "openssl",
- "url 2.2.2",
+ "url",
  "wildmatch",
 ]
 
@@ -341,16 +341,6 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "bytes"
-version = "0.4.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "206fdffcfa2df7cbe15601ef46c813fce0965eb3286db6b56c583b814b51c81c"
-dependencies = [
- "byteorder",
- "iovec",
-]
-
 [[package]]
 name = "bytes"
 version = "1.1.0"
@@ -400,7 +390,7 @@ dependencies = [
  "termcolor",
  "toml_edit 0.13.4",
  "ureq",
- "url 2.2.2",
+ "url",
 ]
 
 [[package]]
@@ -448,19 +438,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "cargo-show"
-version = "0.5.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36421845bb7a91e8efac84714a7ed47f67ab1d33f97ce91e4e5c5f0c63137251"
-dependencies = [
- "docopt",
- "g-k-crates-io-client",
- "serde",
- "serde_derive",
- "serde_json",
-]
-
 [[package]]
 name = "cargo_metadata"
 version = "0.12.3"
@@ -645,7 +622,7 @@ version = "4.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a604e93b79d1808327a6fca85a6f2d69de66461e7620f5a4cbf5fb4d1d7c948"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "memchr 2.5.0",
 ]
 
@@ -826,36 +803,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "curl"
-version = "0.4.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37d855aeef205b43f65a5001e0997d81f8efca7badad4fad7d897aa7f0d0651f"
-dependencies = [
- "curl-sys",
- "libc",
- "openssl-probe",
- "openssl-sys",
- "schannel",
- "socket2",
- "winapi 0.3.9",
-]
-
-[[package]]
-name = "curl-sys"
-version = "0.4.55+curl-7.83.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23734ec77368ec583c2e61dd3f0b0e5c98b93abe6d2a004ca06b91dd7e3e2762"
-dependencies = [
- "cc",
- "libc",
- "libz-sys",
- "openssl-sys",
- "pkg-config",
- "vcpkg",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "digest"
 version = "0.8.1"
@@ -896,18 +843,6 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
-[[package]]
-name = "docopt"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f3f119846c823f9eafcf953a8f6ffb6ed69bf6240883261a7f13b634579a51f"
-dependencies = [
- "lazy_static 1.4.0",
- "regex 1.5.5",
- "serde",
- "strsim 0.10.0",
-]
-
 [[package]]
 name = "duckscript"
 version = "0.7.2"
@@ -1044,7 +979,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a5019be18538406a43b5419a5501461f0c8b49ea7dfda0cfc32f4e51fc44be1"
 dependencies = [
  "log",
- "url 2.2.2",
+ "url",
 ]
 
 [[package]]
@@ -1063,28 +998,6 @@ version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77f3309417938f28bf8228fcff79a4a37103981e3e186d2ccd19c74b38f4eb71"
 
-[[package]]
-name = "failure"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d32e9bd16cc02eae7db7ef620b392808b89f6a5e16bb3497d159c6b92a0f4f86"
-dependencies = [
- "backtrace",
- "failure_derive",
-]
-
-[[package]]
-name = "failure_derive"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "synstructure",
-]
-
 [[package]]
 name = "fake-simd"
 version = "0.1.2"
@@ -1155,7 +1068,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5fc25a87fa4fd2094bffb06925852034d90a17f0d1e05197d4956d3555752191"
 dependencies = [
  "matches",
- "percent-encoding 2.1.0",
+ "percent-encoding",
 ]
 
 [[package]]
@@ -1222,21 +1135,6 @@ dependencies = [
  "waker-fn",
 ]
 
-[[package]]
-name = "g-k-crates-io-client"
-version = "0.27.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db4138de9595af0ee0120805224b86682f1a868a588c927a8f07fff9fac302c5"
-dependencies = [
- "curl",
- "failure",
- "http 0.1.21",
- "serde",
- "serde_derive",
- "serde_json",
- "url 1.7.2",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.12.4"
@@ -1294,7 +1192,7 @@ dependencies = [
  "log",
  "openssl-probe",
  "openssl-sys",
- "url 2.2.2",
+ "url",
 ]
 
 [[package]]
@@ -1403,26 +1301,15 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
-[[package]]
-name = "http"
-version = "0.1.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6ccf5ede3a895d8856620237b2f02972c1bbc78d2965ad7fe8838d4a0ed41f0"
-dependencies = [
- "bytes 0.4.12",
- "fnv",
- "itoa 0.4.8",
-]
-
 [[package]]
 name = "http"
 version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff8670570af52249509a86f5e3e18a08c60b177071826898fde8997cf5f6bfbb"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "fnv",
- "itoa 1.0.1",
+ "itoa",
 ]
 
 [[package]]
@@ -1449,17 +1336,6 @@ dependencies = [
  "quick-error",
 ]
 
-[[package]]
-name = "idna"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
-dependencies = [
- "matches",
- "unicode-bidi",
- "unicode-normalization",
-]
-
 [[package]]
 name = "idna"
 version = "0.2.3"
@@ -1509,15 +1385,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "iovec"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "itertools"
 version = "0.10.3"
@@ -1527,12 +1394,6 @@ dependencies = [
  "either",
 ]
 
-[[package]]
-name = "itoa"
-version = "0.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
-
 [[package]]
 name = "itoa"
 version = "1.0.1"
@@ -1759,7 +1620,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4eaf053e9c62b46ca709b2a02559ef225a39bcbe98b03299dfed2eec2d1c81f"
 dependencies = [
  "getopts",
- "percent-encoding 2.1.0",
+ "percent-encoding",
 ]
 
 [[package]]
@@ -1818,7 +1679,6 @@ version = "0.2.8"
 dependencies = [
  "cargo-edit",
  "cargo-make",
- "cargo-show",
  "cargo_toml",
  "conventional_commits_linter",
  "itertools",
@@ -2026,12 +1886,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8835116a5c179084a830efb3adc117ab007512b535bc1a21c991d3b32a6b44dd"
 
-[[package]]
-name = "percent-encoding"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
-
 [[package]]
 name = "percent-encoding"
 version = "2.1.0"
@@ -2486,7 +2340,7 @@ dependencies = [
  "structopt",
  "thiserror",
  "toml_edit 0.2.1",
- "url 2.2.2",
+ "url",
 ]
 
 [[package]]
@@ -2553,7 +2407,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c"
 dependencies = [
  "indexmap",
- "itoa 1.0.1",
+ "itoa",
  "ryu",
  "serde",
 ]
@@ -2748,18 +2602,6 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "synstructure"
-version = "0.12.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "unicode-xid",
-]
-
 [[package]]
 name = "target-spec"
 version = "0.6.1"
@@ -3022,22 +2864,11 @@ dependencies = [
  "serde",
  "serde_json",
  "socks",
- "url 2.2.2",
+ "url",
  "webpki",
  "webpki-roots",
 ]
 
-[[package]]
-name = "url"
-version = "1.7.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
-dependencies = [
- "idna 0.1.5",
- "matches",
- "percent-encoding 1.0.1",
-]
-
 [[package]]
 name = "url"
 version = "2.2.2"
@@ -3045,9 +2876,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a507c383b2d33b5fc35d1861e77e6b383d158b2da5e14fe51b83dfedf6fd578c"
 dependencies = [
  "form_urlencoded",
- "idna 0.2.3",
+ "idna",
  "matches",
- "percent-encoding 2.1.0",
+ "percent-encoding",
  "serde",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 92e12e2..c584d05 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,6 @@ michie-macro = { path = "macro", version = "=0.2.8" }
 [dev-dependencies]
 cargo-edit = "0.9.1"
 cargo-make = "0.35.12"
-cargo-show = "0.5.9"
 cargo_toml = "0.11.5"
 conventional_commits_linter = "0.12.1"
 itertools = "0.10.3"
diff --git a/Makefile.toml b/Makefile.toml
index a15c9d9..529719b 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -108,9 +108,13 @@ script = '''
 set -euxo pipefail
 cargo publish --package michie-macro
 attempts=0
-while [ $attempts -lt 10 ]; do
-    max_version=$(cargo bin cargo-show --json michie-macro | cargo bin jql '"crate"."max_version"')
-    if [ $max_version == "\"$1\"" ]; then
+while [ $attempts -lt 90 ]; do
+    latest_version=$( \
+        wget --quiet --output-document - 'https://raw.githubusercontent.com/rust-lang/crates.io-index/master/mi/ch/michie-macro' \
+        | tail --lines 1 \
+        | cargo bin jql '"vers"' \
+    )
+    if [ $latest_version == "\"$1\"" ]; then
         cargo publish --package michie
         exit 0
     fi