diff --git a/Cargo.lock b/Cargo.lock
index 4d747f6d..96077431 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2835,18 +2835,18 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1217f97ab8e8904b57dd22eb61cde455fa7446a9c1cf43966066da047c1f3702"
+checksum = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8c6faef9a2e64b0064f48570289b4bf8823b7581f1d6157c1b52152306651d0"
+checksum = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
 dependencies = [
  "proc-macro2 1.0.6",
  "quote 1.0.2",
diff --git a/src/cfg/Cargo.toml b/src/cfg/Cargo.toml
index a2d594db..89a98bc7 100644
--- a/src/cfg/Cargo.toml
+++ b/src/cfg/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Mikail Bagishov <bagishov.mikail@yandex.ru>"]
 edition = "2018"
 
 [dependencies]
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 serde_derive = "1.0.103"
 toml = "0.5.5"
 pom = {path = "../pom"}
diff --git a/src/cli/Cargo.toml b/src/cli/Cargo.toml
index 71a9c2cf..31f9998e 100644
--- a/src/cli/Cargo.toml
+++ b/src/cli/Cargo.toml
@@ -12,7 +12,7 @@ base64 = "0.11.0"
 slog = "2.5.2"
 serde_json = "1.0.44"
 graphql_client = "0.8.0"
-serde = "1.0.103"
+serde = "1.0.104"
 slog-envlogger = "2.2.0"
 slog-stdlog = "4.0.0"
 slog-term = "2.4.2"
diff --git a/src/db/Cargo.toml b/src/db/Cargo.toml
index 29f8e2b9..c777052b 100644
--- a/src/db/Cargo.toml
+++ b/src/db/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 diesel = { version = "1.4.3", features = ["postgres", "uuidv07", "r2d2"] }
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 uuid = { version = "0.7.4", features = ["serde", "v4"] }
 r2d2 = "0.8.7"
 invoker-api = {path = "../invoker-api"}
diff --git a/src/deploy/Cargo.toml b/src/deploy/Cargo.toml
index 3166d18e..d97a159c 100644
--- a/src/deploy/Cargo.toml
+++ b/src/deploy/Cargo.toml
@@ -19,7 +19,7 @@ console = "0.9.1"
 serde_json = "1.0.44"
 fs_extra = "1.1.0"
 tar = "0.4.26"
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 shell-escape = "0.1.4"
 tera = "0.11.20"
 util = {path = "../util"}
diff --git a/src/devtool/Cargo.toml b/src/devtool/Cargo.toml
index 94dee632..eb8d33d6 100644
--- a/src/devtool/Cargo.toml
+++ b/src/devtool/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 structopt = "0.3.5"
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 log = "0.4.8"
 env_logger = "0.7.1"
 ignore = "0.4.10"
diff --git a/src/frontend-api/Cargo.toml b/src/frontend-api/Cargo.toml
index db7d80c1..fb2c14c9 100644
--- a/src/frontend-api/Cargo.toml
+++ b/src/frontend-api/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 reqwest = "0.9.24"
-serde = "1.0.103"
+serde = "1.0.104"
 graphql_client = "0.8.0"
 frontend-api-derive = {path = "../frontend-api-derive"}
 serde_json = "1.0.44"
diff --git a/src/frontend-engine/Cargo.toml b/src/frontend-engine/Cargo.toml
index e9f1117b..d6ae6079 100644
--- a/src/frontend-engine/Cargo.toml
+++ b/src/frontend-engine/Cargo.toml
@@ -11,7 +11,7 @@ rand = "0.7.2"
 juniper = "0.14.1"
 uuid = "0.7.4"
 rocket = "0.4.2"
-serde = "1.0.103"
+serde = "1.0.104"
 sha3 = "0.8.2"
 rand_chacha = "0.2.1"
 cfg = {path = "../cfg"}
diff --git a/src/invoker-api/Cargo.toml b/src/invoker-api/Cargo.toml
index 74dc959e..f574a866 100644
--- a/src/invoker-api/Cargo.toml
+++ b/src/invoker-api/Cargo.toml
@@ -5,6 +5,6 @@ authors = ["Mikail Bagishov <bagishov.mikail@yandex.ru>"]
 edition = "2018"
 
 [dependencies]
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 strum = "0.16.0"
 strum_macros = "0.16.0"
diff --git a/src/invoker/Cargo.toml b/src/invoker/Cargo.toml
index 1ac95b71..14b2c3c5 100644
--- a/src/invoker/Cargo.toml
+++ b/src/invoker/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 minion = {path = "../minion"}
 cfg = {path ="../cfg"}
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0.44"
 db = {path = "../db"}
 dotenv = "0.15.0"
diff --git a/src/minion/Cargo.toml b/src/minion/Cargo.toml
index 1a8b13a7..37bba149 100644
--- a/src/minion/Cargo.toml
+++ b/src/minion/Cargo.toml
@@ -9,7 +9,7 @@ libc= "0.2.66"
 errno= "0.2.4"
 rand = "0.7.2"
 cfg-if = "0.1.10"
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0.44"
 tiny-nix-ipc = { git = "https://github.com/myfreeweb/tiny-nix-ipc", features = ["ser_json", "zero_copy"] }
 procfs = "0.7.5"
diff --git a/src/pom/Cargo.toml b/src/pom/Cargo.toml
index 907a2c25..bd2a0272 100644
--- a/src/pom/Cargo.toml
+++ b/src/pom/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2018"
 description = "problems&contests object model (shared between invoker and tt)"
 
 [dependencies]
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
diff --git a/src/ppc/Cargo.toml b/src/ppc/Cargo.toml
index 61366347..d910421a 100644
--- a/src/ppc/Cargo.toml
+++ b/src/ppc/Cargo.toml
@@ -9,7 +9,7 @@ PPC is tool for prepararing problems and contests
 
 [dependencies]
 structopt = "0.3.5"
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 toml = "0.5.5"
 snafu = "0.6.0"
 glob = "0.3.0"
diff --git a/src/ranker/Cargo.toml b/src/ranker/Cargo.toml
index 26a69aaa..9b11c6f6 100644
--- a/src/ranker/Cargo.toml
+++ b/src/ranker/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Mikail Bagishov <bagishov.mikail@yandex.ru>"]
 edition = "2018"
 
 [dependencies]
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 
 [dev-dependencies]
 pretty_assertions = "0.6.1"
diff --git a/src/soft/Cargo.toml b/src/soft/Cargo.toml
index 78dd06d4..80fa1736 100644
--- a/src/soft/Cargo.toml
+++ b/src/soft/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 structopt = "0.3.5"
 serde_json = "1.0.44"
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 anyhow = "1.0.25"
 util = {path = "../util"}
 toml = "0.5.5"
diff --git a/src/userlist/Cargo.toml b/src/userlist/Cargo.toml
index 93df8c9f..91fbbaf7 100644
--- a/src/userlist/Cargo.toml
+++ b/src/userlist/Cargo.toml
@@ -13,5 +13,5 @@ pest = "2.1.2"
 pest_derive = "2.1.0"
 graphql_client = "0.8.0"
 reqwest = "0.9.24"
-serde = { version = "1.0.103", features = ["derive"] }
+serde = { version = "1.0.104", features = ["derive"] }
 uuid = "0.7.4"