diff --git a/Cargo.lock b/Cargo.lock
index b9364ac1..b1f822a3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1196,15 +1196,6 @@ version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4ae5f15dda3c708c0ade84bfee31ccab44a3da4f88015ed22f63732abe300c8"
 
-[[package]]
-name = "defmt"
-version = "0.3.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0963443817029b2024136fc4dd07a5107eb8f977eaf18fcd1fdeb11306b64ad"
-dependencies = [
- "defmt 1.1.1",
-]
-
 [[package]]
 name = "defmt"
 version = "1.1.1"
@@ -4956,14 +4947,14 @@ dependencies = [
 
 [[package]]
 name = "smoltcp"
-version = "0.13.1"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f73d40463bba65efc9adc6370b56df76d563cc46e2482bba58351b4afb7535e"
+checksum = "b6f8b28ad56c6e35524a37dd492af5d1a47e31e1a4d175cd12f89c075f01980f"
 dependencies = [
  "bitflags 1.3.2",
  "byteorder",
  "cfg-if",
- "defmt 0.3.100",
+ "defmt",
  "heapless",
  "log",
  "managed",
diff --git a/Cargo.toml b/Cargo.toml
index dcd4079a..b11600e4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -92,7 +92,7 @@ serde_json = "1"
 serde_with = "3"
 smallvec = "1.15"
 static_assertions = "1.1"
-smoltcp = { version = "0.13", default-features = false }
+smoltcp = { version = "0.14", default-features = false }
 thiserror = { version = "2", default-features = false }
 tokio = { version = "1", default-features = false, features = ["rt-multi-thread", "macros"] }
 tokio-util = { version = "0.7", default-features = false }
diff --git a/ts_netstack_smoltcp/Cargo.toml b/ts_netstack_smoltcp/Cargo.toml
index dcd7f348..c0a811af 100644
--- a/ts_netstack_smoltcp/Cargo.toml
+++ b/ts_netstack_smoltcp/Cargo.toml
@@ -40,6 +40,7 @@ features = [
     "proto-ipv4-fragmentation",
     "medium-ip",
     "socket-tcp",
+    "socket-tcp-cubic",
     "socket-udp",
     "socket-icmp",
     "socket-raw",
@@ -69,6 +70,7 @@ features = [
     "proto-ipv4-fragmentation",
     "medium-ip",
     "socket-tcp",
+    "socket-tcp-cubic",
     "socket-udp",
     "socket-icmp",
     "socket-raw",