diff --git a/Cargo.lock b/Cargo.lock
index d59e9a2..a2d67de 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -26,21 +26,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "android-tzdata"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
-
-[[package]]
-name = "android_system_properties"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "anstream"
 version = "0.6.18"
@@ -121,24 +106,12 @@ dependencies = [
  "backtrace",
 ]
 
-[[package]]
-name = "base64"
-version = "0.22.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
-
 [[package]]
 name = "bitflags"
 version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f68f53c83ab957f72c32642f3868eec03eb974d1fb82e453128456482613d36"
 
-[[package]]
-name = "bumpalo"
-version = "3.17.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
-
 [[package]]
 name = "cc"
 version = "1.2.11"
@@ -162,31 +135,12 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
-[[package]]
-name = "chrono"
-version = "0.4.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e36cc9d416881d2e24f9a963be5fb1cd90966419ac844274161d10488b3e825"
-dependencies = [
- "android-tzdata",
- "iana-time-zone",
- "num-traits",
- "serde",
- "windows-targets",
-]
-
 [[package]]
 name = "colorchoice"
 version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
 
-[[package]]
-name = "core-foundation-sys"
-version = "0.8.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
-
 [[package]]
 name = "crc"
 version = "3.2.1"
@@ -202,51 +156,6 @@ version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
 
-[[package]]
-name = "darling"
-version = "0.20.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f63b86c8a8826a49b8c21f08a2d07338eec8d900540f8630dc76284be802989"
-dependencies = [
- "darling_core",
- "darling_macro",
-]
-
-[[package]]
-name = "darling_core"
-version = "0.20.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95133861a8032aaea082871032f5815eb9e98cef03fa916ab4500513994df9e5"
-dependencies = [
- "fnv",
- "ident_case",
- "proc-macro2",
- "quote",
- "strsim",
- "syn",
-]
-
-[[package]]
-name = "darling_macro"
-version = "0.20.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d336a2a514f6ccccaa3e09b02d41d35330c07ddf03a62165fcec10bb561c7806"
-dependencies = [
- "darling_core",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "deranged"
-version = "0.3.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b42b6fa04a440b495c8b04d0e71b707c585f83cb9cb28cf8cd0d976c315e31b4"
-dependencies = [
- "powerfmt",
- "serde",
-]
-
 [[package]]
 name = "disks"
 version = "0.1.0"
@@ -291,12 +200,6 @@ dependencies = [
  "log",
 ]
 
-[[package]]
-name = "equivalent"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
-
 [[package]]
 name = "errno"
 version = "0.3.10"
@@ -307,12 +210,6 @@ dependencies = [
  "windows-sys",
 ]
 
-[[package]]
-name = "fnv"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
-
 [[package]]
 name = "getrandom"
 version = "0.2.15"
@@ -342,75 +239,6 @@ dependencies = [
  "uuid",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
-
-[[package]]
-name = "hashbrown"
-version = "0.15.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
-
-[[package]]
-name = "hex"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
-
-[[package]]
-name = "iana-time-zone"
-version = "0.1.61"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "235e081f3925a06703c2d0117ea8b91f042756fd6e7a6e5d901e8ca1a996b220"
-dependencies = [
- "android_system_properties",
- "core-foundation-sys",
- "iana-time-zone-haiku",
- "js-sys",
- "wasm-bindgen",
- "windows-core",
-]
-
-[[package]]
-name = "iana-time-zone-haiku"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
-dependencies = [
- "cc",
-]
-
-[[package]]
-name = "ident_case"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
-
-[[package]]
-name = "indexmap"
-version = "1.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
-dependencies = [
- "autocfg",
- "hashbrown 0.12.3",
- "serde",
-]
-
-[[package]]
-name = "indexmap"
-version = "2.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c9c992b02b5b4c94ea26e32fe5bccb7aa7d9f390ab5c1221ff895bc7ea8b652"
-dependencies = [
- "equivalent",
- "hashbrown 0.15.2",
- "serde",
-]
-
 [[package]]
 name = "is_ci"
 version = "1.2.0"
@@ -447,16 +275,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "js-sys"
-version = "0.3.77"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
-dependencies = [
- "once_cell",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "kdl"
 version = "6.3.3"
@@ -609,12 +427,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "num-conv"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
-
 [[package]]
 name = "num-integer"
 version = "0.1.46"
@@ -751,12 +563,6 @@ version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
 
-[[package]]
-name = "powerfmt"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.93"
@@ -870,12 +676,6 @@ dependencies = [
  "windows-sys",
 ]
 
-[[package]]
-name = "rustversion"
-version = "1.0.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7c45b9784283f1b2e7fb61b42047c2fd678ef0960d4f6f1eba131594cc369d4"
-
 [[package]]
 name = "ryu"
 version = "1.0.19"
@@ -914,36 +714,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "serde_with"
-version = "3.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6b6f7f2fcb69f747921f79f3926bd1e203fce4fef62c268dd3abfb6d86029aa"
-dependencies = [
- "base64",
- "chrono",
- "hex",
- "indexmap 1.9.3",
- "indexmap 2.7.1",
- "serde",
- "serde_derive",
- "serde_json",
- "serde_with_macros",
- "time",
-]
-
-[[package]]
-name = "serde_with_macros"
-version = "3.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d00caa5193a3c8362ac2b73be6b9e768aa5a4b2f721d8f4b339600c3cb51f8e"
-dependencies = [
- "darling",
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"
@@ -971,19 +741,12 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
 
-[[package]]
-name = "strsim"
-version = "0.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
-
 [[package]]
 name = "superblock"
 version = "0.1.0"
 dependencies = [
  "serde",
  "serde_json",
- "serde_with",
  "test-log",
  "thiserror 2.0.11",
  "uuid",
@@ -1115,37 +878,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "time"
-version = "0.3.37"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35e7868883861bd0e56d9ac6efcaaca0d6d5d82a2a7ec8209ff492c07cf37b21"
-dependencies = [
- "deranged",
- "itoa",
- "num-conv",
- "powerfmt",
- "serde",
- "time-core",
- "time-macros",
-]
-
-[[package]]
-name = "time-core"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
-
-[[package]]
-name = "time-macros"
-version = "0.2.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2834e6017e3e5e4b9834939793b282bc03b37a3336245fa820e35e233e2a85de"
-dependencies = [
- "num-conv",
- "time-core",
-]
-
 [[package]]
 name = "tracing"
 version = "0.1.41"
@@ -1250,64 +982,6 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
-[[package]]
-name = "wasm-bindgen"
-version = "0.2.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
-dependencies = [
- "cfg-if",
- "once_cell",
- "rustversion",
- "wasm-bindgen-macro",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
-dependencies = [
- "bumpalo",
- "log",
- "proc-macro2",
- "quote",
- "syn",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-macro"
-version = "0.2.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
-dependencies = [
- "quote",
- "wasm-bindgen-macro-support",
-]
-
-[[package]]
-name = "wasm-bindgen-macro-support"
-version = "0.2.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "wasm-bindgen-backend",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-shared"
-version = "0.2.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
-dependencies = [
- "unicode-ident",
-]
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1330,15 +1004,6 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
-[[package]]
-name = "windows-core"
-version = "0.52.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
-dependencies = [
- "windows-targets",
-]
-
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
diff --git a/Cargo.toml b/Cargo.toml
index 785d4db..a9ff943 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,6 @@ nix = { version = "0.29.0", features = ["fs", "mount"] }
 phf = "0.11"
 serde = { version = "1.0" }
 serde_json = "1.0"
-serde_with = "3.0"
 test-log = "0.2.17"
 thiserror = "2.0.3"
 uuid = { version = "1.12.1", features = ["v8"] }
diff --git a/crates/superblock/Cargo.toml b/crates/superblock/Cargo.toml
index 0104433..f045c17 100644
--- a/crates/superblock/Cargo.toml
+++ b/crates/superblock/Cargo.toml
@@ -8,7 +8,6 @@ edition = "2021"
 [dependencies]
 serde = { workspace = true, features = ["derive"] }
 serde_json.workspace = true
-serde_with = { workspace = true, features = ["json", "macros"] }
 thiserror.workspace = true
 uuid = { workspace = true, features = ["v8"] }
 zerocopy = { workspace = true, features = ["derive", "std"] }
diff --git a/crates/superblock/src/luks2/config.rs b/crates/superblock/src/luks2/config.rs
index 72778fa..9905b55 100644
--- a/crates/superblock/src/luks2/config.rs
+++ b/crates/superblock/src/luks2/config.rs
@@ -3,7 +3,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
 use serde::{Deserialize, Serialize};
-use serde_with::{serde_as, DisplayFromStr};
 use std::collections::HashMap;
 
 /// Top-level LUKS2 configuration structure representing a LUKS2 encrypted device.
@@ -24,17 +23,16 @@ pub struct Luks2Config {
 }
 
 /// Core LUKS2 configuration data containing essential metadata about the encrypted device.
-#[serde_as]
 #[derive(Debug, Deserialize, Serialize)]
 pub struct Luks2ConfigData {
     /// Size of the JSON metadata area in bytes.
     /// This defines how much space is reserved for the LUKS2 header.
-    #[serde_as(as = "DisplayFromStr")]
+    #[serde(with = "display_from_str")]
     pub json_size: u64,
 
     /// Size of the keyslots area in bytes.
     /// This defines the total space available for storing encrypted keys.
-    #[serde_as(as = "DisplayFromStr")]
+    #[serde(with = "display_from_str")]
     pub keyslots_size: u64,
 
     /// Optional configuration flags that modify device behavior.
@@ -49,7 +47,6 @@ pub struct Luks2ConfigData {
 }
 
 /// Key derivation function (KDF) configuration used to generate encryption keys from passwords.
-#[serde_as]
 #[derive(Debug, Deserialize, Serialize)]
 pub struct Luks2Kdf {
     /// Type of KDF (e.g. pbkdf2, argon2i, argon2id)
@@ -99,7 +96,6 @@ pub struct Luks2Keyslot {
 }
 
 /// Configuration for keyslot storage area defining where encrypted keys are stored.
-#[serde_as]
 #[derive(Debug, Deserialize, Serialize)]
 pub struct Luks2KeyslotArea {
     /// Type of storage area, defining how the area is organized
@@ -107,11 +103,11 @@ pub struct Luks2KeyslotArea {
     pub area_type: String,
 
     /// Offset in bytes where this area begins on the device
-    #[serde_as(as = "DisplayFromStr")]
+    #[serde(with = "display_from_str")]
     pub offset: u64,
 
     /// Size of this area in bytes
-    #[serde_as(as = "DisplayFromStr")]
+    #[serde(with = "display_from_str")]
     pub size: u64,
 
     /// Encryption algorithm used to protect stored key material
@@ -138,3 +134,27 @@ pub struct Luks2Segment {
     /// Sector size in bytes - the granularity of encryption
     pub sector_size: u64,
 }
+
+mod display_from_str {
+    use std::{fmt::Display, str::FromStr};
+
+    use serde::{Deserialize, Deserializer, Serializer};
+
+    pub(super) fn serialize<T, S>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        T: Display,
+        S: Serializer,
+    {
+        serializer.serialize_str(&value.to_string())
+    }
+
+    pub(super) fn deserialize<'de, T, D>(deserializer: D) -> Result<T, D::Error>
+    where
+        T: FromStr,
+        T::Err: Display,
+        D: Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        s.parse().map_err(serde::de::Error::custom)
+    }
+}