diff --git a/Cargo.lock b/Cargo.lock
index f2629c8..4c78e02 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -192,9 +192,11 @@ dependencies = [
 
 [[package]]
 name = "codeforces"
-version = "0.1.0"
-source = "git+https://github.com/natsukagami/rust-codeforces-api#e10f2155df238fe5edd2f0d33cb8d6a4ce252e69"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "futures-timer 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "reqwest 0.10.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.110 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.53 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -488,6 +490,11 @@ dependencies = [
  "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "futures-timer"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "futures-util"
 version = "0.3.5"
@@ -2105,7 +2112,7 @@ version = "0.1.0"
 dependencies = [
  "Inflector 0.11.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "codeforces 0.1.0 (git+https://github.com/natsukagami/rust-codeforces-api)",
+ "codeforces 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-channel 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2204,7 +2211,7 @@ dependencies = [
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "80094f509cf8b5ae86a4966a39b3ff66cd7e2a3e594accec3743ff3fabeab5b2"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
-"checksum codeforces 0.1.0 (git+https://github.com/natsukagami/rust-codeforces-api)" = "<none>"
+"checksum codeforces 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9bb885d82383b6b017b437b5929fa662f080b7a986231341e7d5cbf82129ba53"
 "checksum command_attr 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c27d6155f93d880b6379d93ddc9b2417b3b69b715360c5f25525e4576338a381"
 "checksum command_attr 0.3.0-rc.0 (registry+https://github.com/rust-lang/crates.io-index)" = "093ee06b40fcba41b22ddf85de7ed33728fe2e246fcdbc1b1d3ab26f87fabf3b"
 "checksum const-random 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "2f1af9ac737b2dd2d577701e59fd09ba34822f6f2ebdb30a7647405d9e55e16a"
@@ -2240,6 +2247,7 @@ dependencies = [
 "checksum futures-macro 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d0b5a30a4328ab5473878237c447333c093297bded83a4983d10f4deea240d39"
 "checksum futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3f2032893cb734c7a05d85ce0cc8b8c4075278e93b24b66f9de99d6eb0fa8acc"
 "checksum futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "bdb66b5f09e22019b1ab0830f7785bcea8e7a42148683f99214f73f8ec21a626"
+"checksum futures-timer 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e64b03909df88034c26dc1547e8970b91f98bdb65165d6a4e9110d94263dbb2c"
 "checksum futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "8764574ff08b701a084482c3c7031349104b07ac897393010494beaa18ce32c6"
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
diff --git a/youmubot-cf/Cargo.toml b/youmubot-cf/Cargo.toml
index d3b8d33..ad6d4a0 100644
--- a/youmubot-cf/Cargo.toml
+++ b/youmubot-cf/Cargo.toml
@@ -10,7 +10,7 @@ serde = { version = "1", features = ["derive"] }
 reqwest = "0.10.1"
 serenity = "0.8"
 Inflector = "0.11"
-codeforces = { git = "https://github.com/natsukagami/rust-codeforces-api" }
+codeforces = "0.2"
 regex = "1"
 lazy_static = "1"
 rayon = "1"