diff --git a/Cargo.lock b/Cargo.lock
index b8dad8d..e9f5287 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -697,7 +697,7 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "http",
- "indexmap 2.2.6",
+ "indexmap 2.3.0",
  "slab",
  "tokio",
  "tokio-util",
@@ -881,9 +881,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.2.6"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
+checksum = "de3fc2e30ba82dd1b3911c8de1ffc143c74a914a14e99514d7637e3099df5ea0"
 dependencies = [
  "equivalent",
  "hashbrown 0.14.5",
@@ -1178,7 +1178,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4c5cc86750666a3ed20bdaf5ca2a0344f9c67674cae0515bec2da16fbaa47db"
 dependencies = [
  "fixedbitset 0.4.2",
- "indexmap 2.2.6",
+ "indexmap 2.3.0",
 ]
 
 [[package]]
@@ -1554,7 +1554,7 @@ name = "rsjudge-traits"
 version = "0.1.0"
 dependencies = [
  "async-trait",
- "indexmap 2.2.6",
+ "indexmap 2.3.0",
  "serde",
  "serde_json",
  "tokio",
@@ -1908,7 +1908,7 @@ version = "0.8.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a44eede9b727419af8095cb2d72fab15487a541f54647ad4414b34096ee4631"
 dependencies = [
- "indexmap 2.2.6",
+ "indexmap 2.3.0",
  "serde",
  "serde_spanned",
  "toml_datetime",
@@ -1930,7 +1930,7 @@ version = "0.22.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1490595c74d930da779e944f5ba2ecdf538af67df1a9848cbd156af43c1b7cf0"
 dependencies = [
- "indexmap 2.2.6",
+ "indexmap 2.3.0",
  "serde",
  "serde_spanned",
  "toml_datetime",
diff --git a/crates/rsjudge-traits/Cargo.toml b/crates/rsjudge-traits/Cargo.toml
index c48cae2..d0fc9be 100644
--- a/crates/rsjudge-traits/Cargo.toml
+++ b/crates/rsjudge-traits/Cargo.toml
@@ -11,7 +11,7 @@ rust-version.workspace = true
 
 [dependencies]
 async-trait = "0.1.81"
-indexmap = { version = "2.2.6", features = ["serde"] }
+indexmap = { version = "2.3.0", features = ["serde"] }
 serde.workspace = true
 tokio = { workspace = true, features = ["process"] }