diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumChainSpecific.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumChainSpecific.kt
index 217bb3807..6101ef47f 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumChainSpecific.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumChainSpecific.kt
@@ -8,14 +8,16 @@ import io.emeraldpay.dshackle.reader.JsonRpcReader
 import io.emeraldpay.dshackle.upstream.CachingReader
 import io.emeraldpay.dshackle.upstream.Capability
 import io.emeraldpay.dshackle.upstream.EgressSubscription
-import io.emeraldpay.dshackle.upstream.EmptyEgressSubscription
 import io.emeraldpay.dshackle.upstream.Head
 import io.emeraldpay.dshackle.upstream.LabelsDetector
 import io.emeraldpay.dshackle.upstream.Multistream
 import io.emeraldpay.dshackle.upstream.Upstream
 import io.emeraldpay.dshackle.upstream.UpstreamValidator
 import io.emeraldpay.dshackle.upstream.calls.CallMethods
+import io.emeraldpay.dshackle.upstream.ethereum.subscribe.AggregatedPendingTxes
 import io.emeraldpay.dshackle.upstream.ethereum.subscribe.EthereumLabelsDetector
+import io.emeraldpay.dshackle.upstream.ethereum.subscribe.NoPendingTxes
+import io.emeraldpay.dshackle.upstream.ethereum.subscribe.PendingTxesSource
 import io.emeraldpay.dshackle.upstream.generic.CachingReaderBuilder
 import io.emeraldpay.dshackle.upstream.generic.ChainSpecific
 import io.emeraldpay.dshackle.upstream.generic.GenericUpstream
@@ -41,21 +43,20 @@ object EthereumChainSpecific : ChainSpecific {
 
     override fun subscriptionBuilder(headScheduler: Scheduler): (Multistream) -> EgressSubscription {
         return { ms ->
-//            val pendingTxes: PendingTxesSource = (ms.getAll())
-//            .mapNotNull {
-//                it.getIngressSubscription().getPendingTxes()
-//            }.let {
-//                if (it.isEmpty()) {
-//                    NoPendingTxes()
-//                } else if (it.size == 1) {
-//                    it.first()
-//                } else {
-//                    AggregatedPendingTxes(it)
-//                }
-//            }
-//            return
-
-            EmptyEgressSubscription
+            val pendingTxes: PendingTxesSource = (ms.getAll())
+                .map { it as GenericUpstream }
+                .mapNotNull {
+                    (it.getIngressSubscription() as EthereumIngressSubscription).getPendingTxes()
+                }.let {
+                    if (it.isEmpty()) {
+                        NoPendingTxes()
+                    } else if (it.size == 1) {
+                        it.first()
+                    } else {
+                        AggregatedPendingTxes(it)
+                    }
+                }
+            EthereumEgressSubscription(ms, headScheduler, pendingTxes)
         }
     }
 
diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt
index 5c5df67ef..3be3e9d9e 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt
@@ -8,10 +8,10 @@ import io.emeraldpay.dshackle.foundation.ChainOptions
 import io.emeraldpay.dshackle.reader.JsonRpcReader
 import io.emeraldpay.dshackle.startup.QuorumForLabels
 import io.emeraldpay.dshackle.startup.UpstreamChangeEvent
-import io.emeraldpay.dshackle.startup.UpstreamChangeEvent.ChangeType.UPDATED
 import io.emeraldpay.dshackle.upstream.Capability
 import io.emeraldpay.dshackle.upstream.DefaultUpstream
 import io.emeraldpay.dshackle.upstream.Head
+import io.emeraldpay.dshackle.upstream.IngressSubscription
 import io.emeraldpay.dshackle.upstream.LabelsDetectorBuilder
 import io.emeraldpay.dshackle.upstream.Upstream
 import io.emeraldpay.dshackle.upstream.UpstreamAvailability
@@ -19,7 +19,6 @@ import io.emeraldpay.dshackle.upstream.UpstreamValidator
 import io.emeraldpay.dshackle.upstream.UpstreamValidatorBuilder
 import io.emeraldpay.dshackle.upstream.ValidateUpstreamSettingsResult
 import io.emeraldpay.dshackle.upstream.calls.CallMethods
-import io.emeraldpay.dshackle.upstream.ethereum.EthereumIngressSubscription
 import io.emeraldpay.dshackle.upstream.generic.connectors.ConnectorFactory
 import io.emeraldpay.dshackle.upstream.generic.connectors.GenericConnector
 import org.springframework.context.ApplicationEventPublisher
@@ -194,7 +193,7 @@ open class GenericUpstream(
         }
     }
 
-    fun getIngressSubscription(): EthereumIngressSubscription {
+    fun getIngressSubscription(): IngressSubscription {
         return connector.getIngressSubscription()
     }
 
diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericConnector.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericConnector.kt
index ca68bf189..0486bb4c3 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericConnector.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericConnector.kt
@@ -2,8 +2,8 @@ package io.emeraldpay.dshackle.upstream.generic.connectors
 
 import io.emeraldpay.dshackle.reader.JsonRpcReader
 import io.emeraldpay.dshackle.upstream.Head
+import io.emeraldpay.dshackle.upstream.IngressSubscription
 import io.emeraldpay.dshackle.upstream.Lifecycle
-import io.emeraldpay.dshackle.upstream.ethereum.EthereumIngressSubscription
 import reactor.core.publisher.Flux
 
 interface GenericConnector : Lifecycle {
@@ -13,5 +13,5 @@ interface GenericConnector : Lifecycle {
 
     fun getIngressReader(): JsonRpcReader
 
-    fun getIngressSubscription(): EthereumIngressSubscription
+    fun getIngressSubscription(): IngressSubscription
 }
diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericRpcConnector.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericRpcConnector.kt
index 43ee5ea06..6b2732f92 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericRpcConnector.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericRpcConnector.kt
@@ -7,9 +7,9 @@ import io.emeraldpay.dshackle.reader.JsonRpcReader
 import io.emeraldpay.dshackle.upstream.BlockValidator
 import io.emeraldpay.dshackle.upstream.DefaultUpstream
 import io.emeraldpay.dshackle.upstream.Head
+import io.emeraldpay.dshackle.upstream.IngressSubscription
 import io.emeraldpay.dshackle.upstream.Lifecycle
 import io.emeraldpay.dshackle.upstream.MergedHead
-import io.emeraldpay.dshackle.upstream.ethereum.EthereumIngressSubscription
 import io.emeraldpay.dshackle.upstream.ethereum.EthereumWsHead
 import io.emeraldpay.dshackle.upstream.ethereum.HeadLivenessValidator
 import io.emeraldpay.dshackle.upstream.ethereum.NoEthereumIngressSubscription
@@ -145,7 +145,7 @@ class GenericRpcConnector(
         return directReader
     }
 
-    override fun getIngressSubscription(): EthereumIngressSubscription {
+    override fun getIngressSubscription(): IngressSubscription {
         return NoEthereumIngressSubscription.DEFAULT
     }
 
diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericWsConnector.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericWsConnector.kt
index 3bd33a2c1..2caa57b97 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericWsConnector.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/connectors/GenericWsConnector.kt
@@ -4,6 +4,7 @@ import io.emeraldpay.dshackle.reader.JsonRpcReader
 import io.emeraldpay.dshackle.upstream.BlockValidator
 import io.emeraldpay.dshackle.upstream.DefaultUpstream
 import io.emeraldpay.dshackle.upstream.Head
+import io.emeraldpay.dshackle.upstream.IngressSubscription
 import io.emeraldpay.dshackle.upstream.ethereum.EthereumIngressSubscription
 import io.emeraldpay.dshackle.upstream.ethereum.EthereumWsHead
 import io.emeraldpay.dshackle.upstream.ethereum.HeadLivenessValidator
@@ -74,7 +75,7 @@ class GenericWsConnector(
         return reader
     }
 
-    override fun getIngressSubscription(): EthereumIngressSubscription {
+    override fun getIngressSubscription(): IngressSubscription {
         return subscriptions
     }
 
diff --git a/src/test/groovy/io/emeraldpay/dshackle/test/GenericConnectorMock.groovy b/src/test/groovy/io/emeraldpay/dshackle/test/GenericConnectorMock.groovy
index 6612c4e97..d71c57243 100644
--- a/src/test/groovy/io/emeraldpay/dshackle/test/GenericConnectorMock.groovy
+++ b/src/test/groovy/io/emeraldpay/dshackle/test/GenericConnectorMock.groovy
@@ -47,7 +47,7 @@ class GenericConnectorMock implements GenericConnector {
     }
 
     @Override
-    EthereumIngressSubscription getIngressSubscription() {
+    error.NonExistentClass getIngressSubscription() {
         return NoEthereumIngressSubscription.DEFAULT
     }
 }
\ No newline at end of file