diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index 908dd559ff8..86ad12e8961 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -24,7 +24,7 @@ lightning-liquidity = { path = "../lightning-liquidity" }
 lightning-rapid-gossip-sync = { path = "../lightning-rapid-gossip-sync" }
 lightning-persister = { path = "../lightning-persister", features = ["tokio"]}
 bech32 = "0.11.0"
-bitcoin = { version = "0.32.2", features = ["secp-lowmemory"] }
+bitcoin = { version = "0.32.4", features = ["secp-lowmemory"] }
 tokio = { version = "~1.35", default-features = false, features = ["rt-multi-thread"] }
 
 afl = { version = "0.12", optional = true }
diff --git a/lightning-invoice/Cargo.toml b/lightning-invoice/Cargo.toml
index 8e0c7587f4f..2be47854dd2 100644
--- a/lightning-invoice/Cargo.toml
+++ b/lightning-invoice/Cargo.toml
@@ -21,7 +21,7 @@ std = []
 bech32 = { version = "0.11.0", default-features = false }
 lightning-types = { version = "0.3.0", path = "../lightning-types", default-features = false }
 serde = { version = "1.0", optional = true, default-features = false, features = ["alloc"] }
-bitcoin = { version = "0.32.2", default-features = false, features = ["secp-recovery"] }
+bitcoin = { version = "0.32.4", default-features = false, features = ["secp-recovery"] }
 
 [dev-dependencies]
 serde_json = { version = "1"}
diff --git a/lightning-invoice/src/lib.rs b/lightning-invoice/src/lib.rs
index ecffcf889a7..6afd1956c20 100644
--- a/lightning-invoice/src/lib.rs
+++ b/lightning-invoice/src/lib.rs
@@ -437,6 +437,9 @@ pub enum Currency {
 	/// Bitcoin testnet
 	BitcoinTestnet,
 
+	/// Bitcoin testnet4
+	BitcoinTestnet4,
+
 	/// Bitcoin regtest
 	Regtest,
 
@@ -452,12 +455,9 @@ impl From<Network> for Currency {
 		match network {
 			Network::Bitcoin => Currency::Bitcoin,
 			Network::Testnet => Currency::BitcoinTestnet,
+			Network::Testnet4 => Currency::BitcoinTestnet4,
 			Network::Regtest => Currency::Regtest,
 			Network::Signet => Currency::Signet,
-			_ => {
-				debug_assert!(false, "Need to handle new rust-bitcoin network type");
-				Currency::Regtest
-			},
 		}
 	}
 }
@@ -467,6 +467,7 @@ impl From<Currency> for Network {
 		match currency {
 			Currency::Bitcoin => Network::Bitcoin,
 			Currency::BitcoinTestnet => Network::Testnet,
+			Currency::BitcoinTestnet4 => Network::Testnet4,
 			Currency::Regtest => Network::Regtest,
 			Currency::Simnet => Network::Regtest,
 			Currency::Signet => Network::Signet,
diff --git a/lightning-invoice/src/ser.rs b/lightning-invoice/src/ser.rs
index 6da172c7220..4b4faea4cf0 100644
--- a/lightning-invoice/src/ser.rs
+++ b/lightning-invoice/src/ser.rs
@@ -194,6 +194,7 @@ impl Display for Currency {
 		let currency_code = match *self {
 			Currency::Bitcoin => "bc",
 			Currency::BitcoinTestnet => "tb",
+			Currency::BitcoinTestnet4 => "tb",
 			Currency::Regtest => "bcrt",
 			Currency::Simnet => "sb",
 			Currency::Signet => "tbs",
@@ -475,6 +476,7 @@ mod test {
 
 		assert_eq!("bc", Currency::Bitcoin.to_string());
 		assert_eq!("tb", Currency::BitcoinTestnet.to_string());
+		assert_eq!("tb", Currency::BitcoinTestnet4.to_string());
 		assert_eq!("bcrt", Currency::Regtest.to_string());
 		assert_eq!("sb", Currency::Simnet.to_string());
 		assert_eq!("tbs", Currency::Signet.to_string());
diff --git a/lightning/Cargo.toml b/lightning/Cargo.toml
index 94919efe66d..06686afd4c7 100644
--- a/lightning/Cargo.toml
+++ b/lightning/Cargo.toml
@@ -37,7 +37,7 @@ lightning-invoice = { version = "0.34.0", path = "../lightning-invoice", default
 lightning-macros = { version = "0.2", path = "../lightning-macros" }
 
 bech32 = { version = "0.11.0", default-features = false }
-bitcoin = { version = "0.32.2", default-features = false, features = ["secp-recovery"] }
+bitcoin = { version = "0.32.4", default-features = false, features = ["secp-recovery"] }
 
 dnssec-prover = { version = "0.6", default-features = false }
 hashbrown = { version = "0.13", default-features = false }
@@ -56,7 +56,7 @@ lightning-macros = { path = "../lightning-macros" }
 parking_lot = { version = "0.12", default-features = false }
 
 [dev-dependencies.bitcoin]
-version = "0.32.2"
+version = "0.32.4"
 default-features = false
 features = ["bitcoinconsensus", "secp-recovery"]