diff --git a/Cargo.lock b/Cargo.lock
index 50bee330..584f1be3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -424,9 +424,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "1.0.11"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
 [[package]]
 name = "joinery"
@@ -559,9 +559,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.18"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
+checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 
 [[package]]
 name = "same-file"
@@ -594,9 +594,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.132"
+version = "1.0.143"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d726bfaff4b320266d395898905d0eba0345aae23b54aee3a737e260fd46db03"
+checksum = "d401abef1d108fbd9cbaebc3e46611f4b1021f714a0597a71f41ee463f5f4a5a"
 dependencies = [
  "itoa",
  "memchr",
@@ -705,12 +705,6 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fcc842091f2def52017664b53082ecbbeb5c7731092bad69d2c63050401dfd64"
 
-[[package]]
-name = "topological-sort"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea68304e134ecd095ac6c3574494fc62b909f416c4fca77e440530221e549d3d"
-
 [[package]]
 name = "typeshare"
 version = "1.0.4"
@@ -740,7 +734,6 @@ dependencies = [
  "flexi_logger",
  "ignore",
  "log",
- "once_cell",
  "serde",
  "toml",
  "typeshare-core",
@@ -759,12 +752,10 @@ dependencies = [
  "joinery",
  "lazy_format",
  "log",
- "once_cell",
  "proc-macro2",
  "quote",
  "syn",
  "thiserror",
- "topological-sort",
 ]
 
 [[package]]
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index e8295234..de166dbd 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -23,7 +23,6 @@ clap = { version = "4.5", features = [
     "wrap_help",
 ] }
 ignore = "0.4"
-once_cell = "1"
 serde = { version = "1", features = ["derive"] }
 toml = "0.9"
 typeshare-core = { path = "../core", version = "=1.13.3" }
diff --git a/core/Cargo.toml b/core/Cargo.toml
index eef74bf9..0759b9cb 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -14,14 +14,12 @@ thiserror = "2"
 itertools = "0.14"
 lazy_format = "2"
 joinery = "3.1"
-topological-sort = { version = "0.2.2" }
 convert_case = { version = "0.8" }
 log.workspace = true
-flexi_logger.workspace = true
 
 [dev-dependencies]
+flexi_logger.workspace = true
 expect-test = "1.5"
-once_cell = "1"
 cool_asserts = "2"
 syn = { version = "2", features = ["full", "visit", "extra-traits"] }
 anyhow = "1"
diff --git a/core/tests/snapshot_tests.rs b/core/tests/snapshot_tests.rs
index 521cd664..eccd73ac 100644
--- a/core/tests/snapshot_tests.rs
+++ b/core/tests/snapshot_tests.rs
@@ -2,13 +2,12 @@ use anyhow::anyhow;
 use anyhow::Context;
 use flexi_logger::DeferredNow;
 use log::Record;
-use once_cell::sync::Lazy;
 use std::{
     collections::{BTreeMap, HashMap},
     fs::{self, OpenOptions},
     io::{Read, Write},
     path::{Path, PathBuf},
-    sync::Once,
+    sync::{LazyLock, Once},
 };
 use typeshare_core::{
     context::{ParseContext, ParseFileContext},
@@ -16,8 +15,8 @@ use typeshare_core::{
     reconcile::reconcile_aliases,
 };
 
-static TESTS_FOLDER_PATH: Lazy<PathBuf> =
-    Lazy::new(|| PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("data/tests"));
+static TESTS_FOLDER_PATH: LazyLock<PathBuf> =
+    LazyLock::new(|| PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("data/tests"));
 
 static INIT: Once = Once::new();
 
@@ -414,28 +413,28 @@ macro_rules! tests {
     )*};
 }
 
-static KOTLIN_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
+static KOTLIN_MAPPINGS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
     [("Url", "String"), ("DateTime", "String")]
         .iter()
         .map(|(k, v)| (k.to_string(), v.to_string()))
         .collect()
 });
 
-static SCALA_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
+static SCALA_MAPPINGS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
     [("Url", "String"), ("DateTime", "String")]
         .iter()
         .map(|(k, v)| (k.to_string(), v.to_string()))
         .collect()
 });
 
-static SWIFT_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
+static SWIFT_MAPPINGS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
     [("Url", "String"), ("DateTime", "Date")]
         .iter()
         .map(|(k, v)| (k.to_string(), v.to_string()))
         .collect()
 });
 
-static TYPESCRIPT_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
+static TYPESCRIPT_MAPPINGS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
     [
         ("Url", "string"),
         ("DateTime", "string"),
@@ -446,7 +445,7 @@ static TYPESCRIPT_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
     .collect()
 });
 
-static GO_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
+static GO_MAPPINGS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
     [
         ("Url", "string"),
         ("DateTime", "string"),
@@ -457,7 +456,7 @@ static GO_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
     .collect()
 });
 
-static PYTHON_MAPPINGS: Lazy<HashMap<String, String>> = Lazy::new(|| {
+static PYTHON_MAPPINGS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
     [
         ("Url", "AnyUrl"),
         ("DateTime", "datetime"),
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 25a87ec9..4750f36e 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -13,9 +13,11 @@ chrono = { version = "0.4", default-features = false, features = [
     "std",
 ] }
 serde = { version = "1", features = ["derive"] }
-serde_json = "1"
 typeshare-annotation = { path = "../annotation", version = "1.0.4" }
 
+[dev-dependencies]
+serde_json = "1"
+
 [features]
 default = ["wasmbind"]
 wasmbind = ["chrono/wasmbind"]