diff --git a/Cargo.lock b/Cargo.lock
index 1be366623e8..8dcfcbf5792 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7284,7 +7284,6 @@ name = "moonbeam-core-primitives"
 version = "0.1.1"
 dependencies = [
  "account",
- "hex-literal",
  "sp-core",
  "sp-runtime",
 ]
@@ -7729,6 +7728,7 @@ dependencies = [
  "pallet-ethereum",
  "pallet-parachain-staking",
  "pallet-sudo",
+ "pallet-timestamp",
  "pallet-transaction-payment-rpc",
  "pallet-transaction-payment-rpc-runtime-api",
  "parity-scale-codec",
diff --git a/core-primitives/Cargo.toml b/core-primitives/Cargo.toml
index cb81cfcb908..222c1196a65 100644
--- a/core-primitives/Cargo.toml
+++ b/core-primitives/Cargo.toml
@@ -9,7 +9,6 @@ version = "0.1.1"
 
 [dependencies]
 account = { workspace = true }
-hex-literal = { workspace = true }
 sp-core = { workspace = true }
 sp-runtime = { workspace = true }
 
diff --git a/core-primitives/src/lib.rs b/core-primitives/src/lib.rs
index 756717cee1d..fd17298ce9e 100644
--- a/core-primitives/src/lib.rs
+++ b/core-primitives/src/lib.rs
@@ -49,12 +49,3 @@ pub type Address = AccountId;
 pub type AccountIndex = u32;
 /// Digest item type.
 pub type DigestItem = generic::DigestItem;
-
-pub mod well_known_relay_keys {
-	use hex_literal::hex;
-
-	#[deprecated]
-	/// Can be removed after runtime 4000
-	pub const TIMESTAMP_NOW: &[u8] =
-		&hex!["f0c365c3cf59d671eb72da0e7a4113c49f1f0515f462cdcf84e0f1d6045dfcbb"];
-}
diff --git a/node/service/Cargo.toml b/node/service/Cargo.toml
index 64d8a5a3334..015f8899264 100644
--- a/node/service/Cargo.toml
+++ b/node/service/Cargo.toml
@@ -48,6 +48,7 @@ moonbeam-runtime = { workspace = true, optional = true }
 moonriver-runtime = { workspace = true, optional = true }
 frame-system = { workspace = true, features = ["std"] }
 pallet-balances = { workspace = true, features = ["std"] }
+pallet-timestamp = { workspace = true }
 pallet-transaction-payment-rpc = { workspace = true }
 pallet-transaction-payment-rpc-runtime-api = { workspace = true, features = [
 	"std",
diff --git a/node/service/src/lazy_loading/mod.rs b/node/service/src/lazy_loading/mod.rs
index c17f11ae999..39ccd05d8c2 100644
--- a/node/service/src/lazy_loading/mod.rs
+++ b/node/service/src/lazy_loading/mod.rs
@@ -604,10 +604,10 @@ where
 						));
 
 						let additional_key_values = vec![
-							// TODO: TIMESTAMP_NOW can be removed after runtime 4000
 							(
-								#[allow(deprecated)]
-								moonbeam_core_primitives::well_known_relay_keys::TIMESTAMP_NOW
+								// TIMESTAMP_NOW was deprecated in runtime 4000, but should
+								// be kept for backwards compatibility with old runtimes
+								pallet_timestamp::Now::<moonbeam_runtime::Runtime>::hashed_key()
 									.to_vec(),
 								timestamp.encode(),
 							),
diff --git a/node/service/src/lib.rs b/node/service/src/lib.rs
index 917076d70ca..2a41e7caad3 100644
--- a/node/service/src/lib.rs
+++ b/node/service/src/lib.rs
@@ -1059,12 +1059,7 @@ where
 		nimbus_consensus::collators::lookahead::run::<Block, _, _, _, FullBackend, _, _, _, _, _, _>(
 			nimbus_consensus::collators::lookahead::Params {
 				additional_digests_provider: maybe_provide_vrf_digest,
-				additional_relay_keys: vec![
-					// TODO: Can be removed after runtime 4000
-					#[allow(deprecated)]
-					moonbeam_core_primitives::well_known_relay_keys::TIMESTAMP_NOW.to_vec(),
-					relay_chain::well_known_keys::EPOCH_INDEX.to_vec(),
-				],
+				additional_relay_keys: vec![relay_chain::well_known_keys::EPOCH_INDEX.to_vec()],
 				authoring_duration: block_authoring_duration,
 				block_import,
 				code_hash_provider,