diff --git a/atcoder-problems-backend/Cargo.lock b/atcoder-problems-backend/Cargo.lock
index 9b3dd3683..e5eac95fe 100644
--- a/atcoder-problems-backend/Cargo.lock
+++ b/atcoder-problems-backend/Cargo.lock
@@ -2640,9 +2640,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.85"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
+checksum = "020ff22c755c2ed3f8cf162dbb41a7268d934702f3ed3631656ea597e08fc3db"
 dependencies = [
  "itoa 1.0.1",
  "ryu",
@@ -2681,17 +2681,6 @@ dependencies = [
  "stable_deref_trait",
 ]
 
-[[package]]
-name = "sha-1"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "028f48d513f9678cda28f6e4064755b3fbb2af6acd672f2c209b62323f7aea0f"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest",
-]
-
 [[package]]
 name = "sha1"
 version = "0.10.4"