diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumLikeRpcUpstream.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumLikeRpcUpstream.kt
index 2629a88d1..d2041cb5b 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumLikeRpcUpstream.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumLikeRpcUpstream.kt
@@ -138,12 +138,12 @@ open class EthereumLikeRpcUpstream(
             validatorSubscription = validator.start()
                 .subscribe(this::setStatus)
         }
-//        livenessSubscription = connector.hasLiveSubscriptionHead().subscribe({
-//            hasLiveSubscriptionHead.set(it)
-//            eventPublisher?.publishEvent(UpstreamChangeEvent(chain, this, UpstreamChangeEvent.ChangeType.UPDATED))
-//        }, {
-//            log.debug("Error while checking live subscription for ${getId()}", it)
-//        },)
+        livenessSubscription = connector.hasLiveSubscriptionHead().subscribe({
+            hasLiveSubscriptionHead.set(it)
+            eventPublisher?.publishEvent(UpstreamChangeEvent(chain, this, UpstreamChangeEvent.ChangeType.UPDATED))
+        }, {
+            log.debug("Error while checking live subscription for ${getId()}", it)
+        },)
     }
 
     private fun updateLabels(label: Pair<String, String>) {
diff --git a/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/HeadLivenessValidator.kt b/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/HeadLivenessValidator.kt
index c3136c958..522a813fa 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/HeadLivenessValidator.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/HeadLivenessValidator.kt
@@ -3,9 +3,12 @@ package io.emeraldpay.dshackle.upstream.ethereum
 import io.emeraldpay.dshackle.ThrottledLogger
 import io.emeraldpay.dshackle.upstream.Head
 import org.slf4j.LoggerFactory
+import org.springframework.scheduling.concurrent.CustomizableThreadFactory
 import reactor.core.publisher.Flux
 import reactor.core.scheduler.Scheduler
+import reactor.core.scheduler.Schedulers
 import java.time.Duration
+import java.util.concurrent.Executors
 
 class HeadLivenessValidator(
     private val head: Head,
@@ -16,6 +19,8 @@ class HeadLivenessValidator(
     companion object {
         const val CHECKED_BLOCKS_UNTIL_LIVE = 3
         private val log = LoggerFactory.getLogger(HeadLivenessValidator::class.java)
+        val schedulerTimeout =
+            Schedulers.fromExecutor(Executors.newScheduledThreadPool(4, CustomizableThreadFactory("timeout-liveness")))
     }
 
     fun getFlux(): Flux<Boolean> {
@@ -51,6 +56,7 @@ class HeadLivenessValidator(
                     ThrottledLogger.log(log, "head liveness check broken with timeout in $upstreamId")
                 }
             },
+            schedulerTimeout,
         ).repeat().subscribeOn(scheduler)
     }
 }
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 8ed42d0c3..b849206f7 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt
@@ -7,6 +7,8 @@ import io.emeraldpay.dshackle.config.UpstreamsConfig.Labels
 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
@@ -81,12 +83,12 @@ class GenericUpstream(
         log.info("Configured for ${chain.chainName}")
         connector.start()
 
-//        livenessSubscription = connector.hasLiveSubscriptionHead().subscribe({
-//            hasLiveSubscriptionHead.set(it)
-//            eventPublisher?.publishEvent(UpstreamChangeEvent(chain, this, UPDATED))
-//        }, {
-//            log.debug("Error while checking live subscription for ${getId()}", it)
-//        },)
+        livenessSubscription = connector.hasLiveSubscriptionHead().subscribe({
+            hasLiveSubscriptionHead.set(it)
+            eventPublisher?.publishEvent(UpstreamChangeEvent(chain, this, UPDATED))
+        }, {
+            log.debug("Error while checking live subscription for ${getId()}", it)
+        },)
     }
 
     override fun stop() {