diff --git a/courses/dss/Cargo.lock b/courses/dss/Cargo.lock
index 18466a33..f8aa733c 100644
--- a/courses/dss/Cargo.lock
+++ b/courses/dss/Cargo.lock
@@ -305,9 +305,9 @@ 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-timer"