Update Cargo.toml

ZhangHanDong · web-flow · commit 779d55d4559a · 2022-12-24T08:18:39.000+08:00
diff --git a/src/ch11/pow/Cargo.toml b/src/ch11/pow/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2018"
 
 [dependencies]
 itertools = "0.7.8"
-rust-crypto = "^0.2"
+sha256 = "1"
