diff --git a/src/commonMain/kotlin/fr/acinq/lightning/wire/InteractiveTxTlv.kt b/src/commonMain/kotlin/fr/acinq/lightning/wire/InteractiveTxTlv.kt
index 9e3ea7dd1..8ae941069 100644
--- a/src/commonMain/kotlin/fr/acinq/lightning/wire/InteractiveTxTlv.kt
+++ b/src/commonMain/kotlin/fr/acinq/lightning/wire/InteractiveTxTlv.kt
@@ -119,6 +119,13 @@ sealed class TxInitRbfTlv : Tlv {
             override fun read(input: Input): SharedOutputContributionTlv = SharedOutputContributionTlv(LightningCodecs.int64(input).sat)
         }
     }
+
+    /** Require confirmed inputs for the transaction being built. */
+    object RequireConfirmedInputsTlv : TxInitRbfTlv(), TlvValueReader<RequireConfirmedInputsTlv> {
+        override val tag: Long get() = 2
+        override fun write(out: Output) = Unit
+        override fun read(input: Input): RequireConfirmedInputsTlv = this
+    }
 }
 
 sealed class TxAckRbfTlv : Tlv {
@@ -137,6 +144,13 @@ sealed class TxAckRbfTlv : Tlv {
             override fun read(input: Input): SharedOutputContributionTlv = SharedOutputContributionTlv(LightningCodecs.int64(input).sat)
         }
     }
+
+    /** Require confirmed inputs for the transaction being built. */
+    object RequireConfirmedInputsTlv : TxAckRbfTlv(), TlvValueReader<RequireConfirmedInputsTlv> {
+        override val tag: Long get() = 2
+        override fun write(out: Output) = Unit
+        override fun read(input: Input): RequireConfirmedInputsTlv = this
+    }
 }
 
 sealed class TxAbortTlv : Tlv
diff --git a/src/commonMain/kotlin/fr/acinq/lightning/wire/LightningMessages.kt b/src/commonMain/kotlin/fr/acinq/lightning/wire/LightningMessages.kt
index b3d969b63..5fcbceb7d 100644
--- a/src/commonMain/kotlin/fr/acinq/lightning/wire/LightningMessages.kt
+++ b/src/commonMain/kotlin/fr/acinq/lightning/wire/LightningMessages.kt
@@ -535,6 +535,7 @@ data class TxInitRbf(
     constructor(channelId: ByteVector32, lockTime: Long, feerate: FeeratePerKw, fundingContribution: Satoshi) : this(channelId, lockTime, feerate, TlvStream(TxInitRbfTlv.SharedOutputContributionTlv(fundingContribution)))
 
     val fundingContribution = tlvs.get<TxInitRbfTlv.SharedOutputContributionTlv>()?.amount ?: 0.sat
+    val requireConfirmedInputs: Boolean = tlvs.get<TxInitRbfTlv.RequireConfirmedInputsTlv>()?.let { true } ?: false
 
     override val type: Long get() = TxInitRbf.type
 
@@ -549,7 +550,10 @@ data class TxInitRbf(
         const val type: Long = 72
 
         @Suppress("UNCHECKED_CAST")
-        val readers = mapOf(TxInitRbfTlv.SharedOutputContributionTlv.tag to TxInitRbfTlv.SharedOutputContributionTlv.Companion as TlvValueReader<TxInitRbfTlv>)
+        val readers = mapOf(
+            TxInitRbfTlv.SharedOutputContributionTlv.tag to TxInitRbfTlv.SharedOutputContributionTlv.Companion as TlvValueReader<TxInitRbfTlv>,
+            TxInitRbfTlv.RequireConfirmedInputsTlv.tag to TxInitRbfTlv.RequireConfirmedInputsTlv as TlvValueReader<TxInitRbfTlv>,
+        )
 
         override fun read(input: Input): TxInitRbf = TxInitRbf(
             LightningCodecs.bytes(input, 32).byteVector32(),
@@ -567,6 +571,7 @@ data class TxAckRbf(
     constructor(channelId: ByteVector32, fundingContribution: Satoshi) : this(channelId, TlvStream(TxAckRbfTlv.SharedOutputContributionTlv(fundingContribution)))
 
     val fundingContribution = tlvs.get<TxAckRbfTlv.SharedOutputContributionTlv>()?.amount ?: 0.sat
+    val requireConfirmedInputs: Boolean = tlvs.get<TxAckRbfTlv.RequireConfirmedInputsTlv>()?.let { true } ?: false
 
     override val type: Long get() = TxAckRbf.type
 
@@ -579,7 +584,10 @@ data class TxAckRbf(
         const val type: Long = 73
 
         @Suppress("UNCHECKED_CAST")
-        val readers = mapOf(TxAckRbfTlv.SharedOutputContributionTlv.tag to TxAckRbfTlv.SharedOutputContributionTlv.Companion as TlvValueReader<TxAckRbfTlv>)
+        val readers = mapOf(
+            TxAckRbfTlv.SharedOutputContributionTlv.tag to TxAckRbfTlv.SharedOutputContributionTlv.Companion as TlvValueReader<TxAckRbfTlv>,
+            TxAckRbfTlv.RequireConfirmedInputsTlv.tag to TxAckRbfTlv.RequireConfirmedInputsTlv as TlvValueReader<TxAckRbfTlv>,
+        )
 
         override fun read(input: Input): TxAckRbf = TxAckRbf(
             LightningCodecs.bytes(input, 32).byteVector32(),
diff --git a/src/commonTest/kotlin/fr/acinq/lightning/wire/LightningCodecsTestsCommon.kt b/src/commonTest/kotlin/fr/acinq/lightning/wire/LightningCodecsTestsCommon.kt
index 50fe736e3..1835ef597 100644
--- a/src/commonTest/kotlin/fr/acinq/lightning/wire/LightningCodecsTestsCommon.kt
+++ b/src/commonTest/kotlin/fr/acinq/lightning/wire/LightningCodecsTestsCommon.kt
@@ -418,13 +418,13 @@ class LightningCodecsTestsCommon : LightningTestSuite() {
             TxSignatures(channelId2, tx1, listOf(), signature, listOf(), swapInSignatures) to ByteVector("0047 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 1f2ec025a33e39ef8e177afcdc1adc855bf128dc906182255aeb64efa825f106 0000 fd0259 40 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb fd025d 80 c49269a9baa73a5ec44b63bdcaabf9c7c6477f72866b822f8502e5c989aa3562fe69d72bec62025d3474b9c2d947ec6d68f9f577be5fab8ee80503cefd8846c3 2dadacd65b585e4061421b5265ff543e2a7bdc4d4a7fea932727426bdc53db252a2f914ea1fcbd580b80cdea60226f63288cd44bd84a8850c9189a24f08c7cc5"),
             TxSignatures(channelId2, tx1, listOf(), signature, swapInSignatures.take(1), swapInSignatures.drop(1)) to ByteVector("0047 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 1f2ec025a33e39ef8e177afcdc1adc855bf128dc906182255aeb64efa825f106 0000 fd0259 40 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb fd025b 40 c49269a9baa73a5ec44b63bdcaabf9c7c6477f72866b822f8502e5c989aa3562fe69d72bec62025d3474b9c2d947ec6d68f9f577be5fab8ee80503cefd8846c3 fd025d 40 2dadacd65b585e4061421b5265ff543e2a7bdc4d4a7fea932727426bdc53db252a2f914ea1fcbd580b80cdea60226f63288cd44bd84a8850c9189a24f08c7cc5"),
             TxInitRbf(channelId1, 8388607, FeeratePerKw(4000.sat)) to ByteVector("0048 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 007fffff 00000fa0"),
-            TxInitRbf(channelId1, 0, FeeratePerKw(4000.sat), TlvStream(TxInitRbfTlv.SharedOutputContributionTlv(1_500_000.sat))) to ByteVector("0048 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 00000000 00000fa0 0008000000000016e360"),
+            TxInitRbf(channelId1, 0, FeeratePerKw(4000.sat), TlvStream(TxInitRbfTlv.SharedOutputContributionTlv(1_500_000.sat), TxInitRbfTlv.RequireConfirmedInputsTlv)) to ByteVector("0048 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 00000000 00000fa0 0008000000000016e360 0200"),
             TxInitRbf(channelId1, 0, FeeratePerKw(4000.sat), TlvStream(TxInitRbfTlv.SharedOutputContributionTlv(0.sat))) to ByteVector("0048 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 00000000 00000fa0 00080000000000000000"),
             TxInitRbf(channelId1, 0, FeeratePerKw(4000.sat), TlvStream(TxInitRbfTlv.SharedOutputContributionTlv((-25_000).sat))) to ByteVector("0048 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 00000000 00000fa0 0008ffffffffffff9e58"),
             TxAckRbf(channelId2) to ByteVector("0049 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"),
             TxAckRbf(channelId2, TlvStream(TxAckRbfTlv.SharedOutputContributionTlv(450_000.sat))) to ByteVector("0049 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0008000000000006ddd0"),
             TxAckRbf(channelId2, TlvStream(TxAckRbfTlv.SharedOutputContributionTlv(0.sat))) to ByteVector("0049 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 00080000000000000000"),
-            TxAckRbf(channelId2, TlvStream(TxAckRbfTlv.SharedOutputContributionTlv((-250_000).sat))) to ByteVector("0049 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0008fffffffffffc2f70"),
+            TxAckRbf(channelId2, TlvStream(TxAckRbfTlv.SharedOutputContributionTlv((-250_000).sat), TxAckRbfTlv.RequireConfirmedInputsTlv)) to ByteVector("0049 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0008fffffffffffc2f70 0200"),
             TxAbort(channelId1, "") to ByteVector("004a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0000"),
             TxAbort(channelId1, "internal error") to ByteVector("004a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 000e 696e7465726e616c206572726f72"),
             // @formatter:on