diff --git a/Cargo.lock b/Cargo.lock
index 93be71a..129554a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,15 +11,6 @@ dependencies = [
  "memchr",
 ]
 
-[[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 = "1.0.0"
@@ -162,19 +153,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
-[[package]]
-name = "chrono"
-version = "0.4.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c673075a2e0e5f4a1dde27ce9dee1ea4558c7ffe648f576438a20ca1d2acc4b0"
-dependencies = [
- "iana-time-zone",
- "js-sys",
- "num-traits",
- "wasm-bindgen",
- "windows-link",
-]
-
 [[package]]
 name = "clap"
 version = "4.6.1"
@@ -257,7 +235,6 @@ version = "0.1.1"
 dependencies = [
  "anyhow",
  "assert_cmd",
- "chrono",
  "clap",
  "clap_complete",
  "colored",
@@ -266,15 +243,13 @@ dependencies = [
  "git2",
  "glob",
  "indicatif",
- "owo-colors",
  "predicates",
  "regex",
  "reqwest",
  "serde",
  "serde_json",
- "serde_yaml",
+ "serde_yaml_ng",
  "tempfile",
- "thiserror",
  "tokio",
  "tokio-test",
  "toml",
@@ -283,12 +258,6 @@ dependencies = [
  "walkdir",
 ]
 
-[[package]]
-name = "core-foundation-sys"
-version = "0.8.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
-
 [[package]]
 name = "difflib"
 version = "0.4.0"
@@ -623,30 +592,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "iana-time-zone"
-version = "0.1.65"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e31bc9ad994ba00e440a8aa5c9ef0ec67d5cb5e5cb0cc7f8b744a35b389cc470"
-dependencies = [
- "android_system_properties",
- "core-foundation-sys",
- "iana-time-zone-haiku",
- "js-sys",
- "log",
- "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 = "icu_collections"
 version = "2.1.1"
@@ -883,15 +828,6 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92daf443525c4cce67b150400bc2316076100ce0b3686209eb8cf3c31612e6f0"
 
-[[package]]
-name = "lock_api"
-version = "0.4.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
-dependencies = [
- "scopeguard",
-]
-
 [[package]]
 name = "log"
 version = "0.4.30"
@@ -972,35 +908,6 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
-[[package]]
-name = "owo-colors"
-version = "4.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d211803b9b6b570f68772237e415a029d5a50c65d382910b879fb19d3271f94d"
-
-[[package]]
-name = "parking_lot"
-version = "0.12.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93857453250e3077bd71ff98b6a65ea6621a19bb0f559a85248955ac12c45a1a"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-link",
-]
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -1197,15 +1104,6 @@ dependencies = [
  "getrandom 0.3.4",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.5.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
-dependencies = [
- "bitflags",
-]
-
 [[package]]
 name = "redox_users"
 version = "0.5.2"
@@ -1376,12 +1274,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "scopeguard"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
 [[package]]
 name = "semver"
 version = "1.0.28"
@@ -1453,10 +1345,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "serde_yaml"
-version = "0.9.34+deprecated"
+name = "serde_yaml_ng"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a8b1a1a2ebf674015cc02edccce75287f1a0130d394307b36743c2f5d504b47"
+checksum = "7b4db627b98b36d4203a7b458cf3573730f2bb591b28871d916dfa9efabfd41f"
 dependencies = [
  "indexmap",
  "itoa",
@@ -1480,16 +1372,6 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
 
-[[package]]
-name = "signal-hook-registry"
-version = "1.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4db69cba1110affc0e9f7bcd48bbf87b3f4fc7c61fc9155afd4c469eb3d6c1b"
-dependencies = [
- "errno",
- "libc",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.12"
@@ -1643,9 +1525,7 @@ dependencies = [
  "bytes",
  "libc",
  "mio",
- "parking_lot",
  "pin-project-lite",
- "signal-hook-registry",
  "socket2",
  "tokio-macros",
  "windows-sys 0.61.2",
@@ -2124,65 +2004,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "windows-core"
-version = "0.62.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
-dependencies = [
- "windows-implement",
- "windows-interface",
- "windows-link",
- "windows-result",
- "windows-strings",
-]
-
-[[package]]
-name = "windows-implement"
-version = "0.60.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "windows-interface"
-version = "0.59.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "windows-link"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
-[[package]]
-name = "windows-result"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7781fa89eaf60850ac3d2da7af8e5242a5ea78d1a11c49bf2910bb5a73853eb5"
-dependencies = [
- "windows-link",
-]
-
-[[package]]
-name = "windows-strings"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7837d08f69c77cf6b07689544538e017c1bfcf57e34b4c0ff58e6c2cd3b37091"
-dependencies = [
- "windows-link",
-]
-
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
diff --git a/Cargo.toml b/Cargo.toml
index 33b2c00..e74fe98 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,8 +15,8 @@ rust-version = "1.85"
 clap = { version = "4", features = ["derive", "env"] }
 clap_complete = "4"
 
-# Async runtime
-tokio = { version = "1", features = ["full"] }
+# Async runtime (only what we need)
+tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
 
 # HTTP client (OpenAI-compatible API calls)
 reqwest = { version = "0.12", features = ["json", "stream", "rustls-tls"], default-features = false }
@@ -24,14 +24,13 @@ reqwest = { version = "0.12", features = ["json", "stream", "rustls-tls"], defau
 # Serialization
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-serde_yaml = "0.9"
+serde_yaml_ng = "0.10"
 
 # Git operations
 git2 = { version = "0.20", default-features = false, features = ["vendored-libgit2"] }
 
 # Terminal output
 colored = "3"
-owo-colors = "4"
 indicatif = "0.18"
 
 # File system
@@ -41,7 +40,6 @@ walkdir = "2"
 
 # Error handling
 anyhow = "1"
-thiserror = "2"
 
 # Config
 toml = "0.8"
@@ -51,7 +49,6 @@ tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 
 # Misc
-chrono = "0.4"
 regex = "1"
 futures-util = "0.3"
 
diff --git a/src/config/schema.rs b/src/config/schema.rs
index 1f207ce..cc0cd8a 100644
--- a/src/config/schema.rs
+++ b/src/config/schema.rs
@@ -133,7 +133,7 @@ pub struct OutputSection {
 
 impl CoraFile {
     pub fn from_str(content: &str) -> Result<Self> {
-        serde_yaml::from_str(content).context("failed to parse .cora.yaml")
+        serde_yaml_ng::from_str(content).context("failed to parse .cora.yaml")
     }
 
     /// Merge this file config into a `Config`, overwriting only fields that are present.
@@ -433,8 +433,8 @@ output:
             focus: Some(vec!["security".to_string()]),
             ..Default::default()
         };
-        let yaml = serde_yaml::to_string(&cora).unwrap();
-        let back: CoraFile = serde_yaml::from_str(&yaml).unwrap();
+        let yaml = serde_yaml_ng::to_string(&cora).unwrap();
+        let back: CoraFile = serde_yaml_ng::from_str(&yaml).unwrap();
         assert_eq!(
             back.provider.as_ref().unwrap().provider.as_deref(),
             Some("ollama")
diff --git a/tests/config_loading.rs b/tests/config_loading.rs
index 4d048d3..e22f6e9 100644
--- a/tests/config_loading.rs
+++ b/tests/config_loading.rs
@@ -33,8 +33,8 @@ fn init_creates_valid_yaml() {
 
     // Verify the created file is valid YAML
     let content = std::fs::read_to_string(&config_path).unwrap();
-    let parsed: serde_yaml::Value =
-        serde_yaml::from_str(&content).expect("init should create valid YAML");
+    let parsed: serde_yaml_ng::Value =
+        serde_yaml_ng::from_str(&content).expect("init should create valid YAML");
 
     // Verify it has expected top-level keys
     assert!(
@@ -59,9 +59,9 @@ output:
 "#;
     let file = write_temp_yaml(yaml);
 
-    // Parse and verify using serde_yaml directly
+    // Parse and verify using serde_yaml_ng directly
     let content = std::fs::read_to_string(file.path()).unwrap();
-    let parsed: serde_yaml::Value = serde_yaml::from_str(&content).unwrap();
+    let parsed: serde_yaml_ng::Value = serde_yaml_ng::from_str(&content).unwrap();
 
     assert_eq!(parsed["provider"]["provider"].as_str(), Some("anthropic"));
     assert_eq!(parsed["provider"]["model"].as_str(), Some("claude-3-haiku"));
@@ -88,11 +88,11 @@ ignore:
     let content = std::fs::read_to_string(file.path()).unwrap();
 
     // Parse to Value, serialize back
-    let val: serde_yaml::Value = serde_yaml::from_str(&content).unwrap();
-    let reser = serde_yaml::to_string(&val).unwrap();
+    let val: serde_yaml_ng::Value = serde_yaml_ng::from_str(&content).unwrap();
+    let reser = serde_yaml_ng::to_string(&val).unwrap();
 
     // Re-parse the re-serialized version to ensure round-trip
-    let val2: serde_yaml::Value = serde_yaml::from_str(&reser).unwrap();
+    let val2: serde_yaml_ng::Value = serde_yaml_ng::from_str(&reser).unwrap();
     assert_eq!(val2["provider"]["provider"], val["provider"]["provider"]);
     assert_eq!(val2["hook"]["mode"], val["hook"]["mode"]);
     assert_eq!(
@@ -106,7 +106,7 @@ fn config_file_empty_yaml_is_valid() {
     let yaml = "";
     let file = write_temp_yaml(yaml);
     let content = std::fs::read_to_string(file.path()).unwrap();
-    let parsed: serde_yaml::Value = serde_yaml::from_str(&content).unwrap();
+    let parsed: serde_yaml_ng::Value = serde_yaml_ng::from_str(&content).unwrap();
     assert!(parsed.is_null());
 }
 
@@ -118,7 +118,7 @@ focus:
 "#;
     let file = write_temp_yaml(yaml);
     let content = std::fs::read_to_string(file.path()).unwrap();
-    let parsed: serde_yaml::Value = serde_yaml::from_str(&content).unwrap();
+    let parsed: serde_yaml_ng::Value = serde_yaml_ng::from_str(&content).unwrap();
     assert_eq!(parsed["focus"].as_sequence().unwrap().len(), 1);
     assert!(parsed.get("provider").is_none());
 }