diff --git "a/\354\206\220\354\240\225\354\232\260/2020-03/2020-03-18/chat_client/Cargo.lock" "b/\354\206\220\354\240\225\354\232\260/2020-03/2020-03-18/chat_client/Cargo.lock"
index ccfaebb0..c212c06e 100644
--- "a/\354\206\220\354\240\225\354\232\260/2020-03/2020-03-18/chat_client/Cargo.lock"
+++ "b/\354\206\220\354\240\225\354\232\260/2020-03/2020-03-18/chat_client/Cargo.lock"
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "arc-swap"
 version = "0.4.4"
@@ -144,9 +146,9 @@ checksum = "3466821b4bc114d95b087b850a724c6f83115e929bc88f1fa98a3304a944c8a6"
 
 [[package]]
 name = "futures-task"
-version = "0.3.4"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b0a34e53cf6cdcd0178aa573aed466b646eb3db769570841fda0c7ede375a27"
+checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
 
 [[package]]
 name = "futures-util"