diff --git a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/DeletableSigner.java b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/DeletableSigner.java
index 30bc8d78f54..571c574d111 100644
--- a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/DeletableSigner.java
+++ b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/DeletableSigner.java
@@ -27,6 +27,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.ContributionAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.SyncAggregatorSelectionData;
@@ -110,6 +111,12 @@ public SafeFuture<BLSSignature> signValidatorRegistration(
     return sign(() -> delegate.signValidatorRegistration(validatorRegistration));
   }
 
+  @Override
+  public SafeFuture<BLSSignature> signInclusionList(
+      final InclusionList inclusionList, final ForkInfo forkInfo) {
+    return sign(() -> delegate.signInclusionList(inclusionList, forkInfo));
+  }
+
   @Override
   public Optional<URL> getSigningServiceUrl() {
     return delegate.getSigningServiceUrl();
diff --git a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/LocalSigner.java b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/LocalSigner.java
index df5a1beed7f..c98682bf725 100644
--- a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/LocalSigner.java
+++ b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/LocalSigner.java
@@ -29,6 +29,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.ContributionAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.SyncAggregatorSelectionData;
@@ -122,6 +123,12 @@ public SafeFuture<BLSSignature> signValidatorRegistration(
     return sign(signingRootUtil.signingRootForValidatorRegistration(validatorRegistration));
   }
 
+  @Override
+  public SafeFuture<BLSSignature> signInclusionList(
+      final InclusionList inclusionList, final ForkInfo forkInfo) {
+    return sign(signingRootUtil.signingRootForInclusionList(inclusionList, forkInfo));
+  }
+
   private SafeFuture<Bytes> signingRootFromSyncCommitteeUtils(
       final UInt64 slot, final Function<SyncCommitteeUtil, Bytes> createSigningRoot) {
     return SafeFuture.of(() -> createSigningRoot.apply(spec.getSyncCommitteeUtilRequired(slot)));
diff --git a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/Signer.java b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/Signer.java
index 89246a2375f..6e5a296c5c0 100644
--- a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/Signer.java
+++ b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/Signer.java
@@ -23,6 +23,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.ContributionAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.SyncAggregatorSelectionData;
@@ -56,6 +57,8 @@ SafeFuture<BLSSignature> signContributionAndProof(
 
   SafeFuture<BLSSignature> signValidatorRegistration(ValidatorRegistration validatorRegistration);
 
+  SafeFuture<BLSSignature> signInclusionList(InclusionList inclusionList, ForkInfo forkInfo);
+
   default boolean isLocal() {
     return getSigningServiceUrl().isEmpty();
   }
diff --git a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SigningRootUtil.java b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SigningRootUtil.java
index 4923887d55f..a22246e5ad0 100644
--- a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SigningRootUtil.java
+++ b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SigningRootUtil.java
@@ -24,6 +24,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.state.ForkInfo;
 import tech.pegasys.teku.spec.logic.common.helpers.MiscHelpers;
@@ -112,4 +113,17 @@ public Bytes signingRootForValidatorRegistration(
     final Bytes32 domain = miscHelpers.computeDomain(Domain.APPLICATION_BUILDER);
     return miscHelpers.computeSigningRoot(validatorRegistration, domain);
   }
+
+  public Bytes signingRootForInclusionList(
+      final InclusionList inclusionList, final ForkInfo forkInfo) {
+    final UInt64 slot = inclusionList.getSlot();
+    final SpecVersion specVersion = spec.atSlot(slot);
+    final Bytes32 domain =
+        spec.getDomain(
+            Domain.DOMAIN_INCLUSION_LIST_COMMITTEE,
+            spec.computeEpochAtSlot(slot),
+            forkInfo.getFork(),
+            forkInfo.getGenesisValidatorsRoot());
+    return specVersion.miscHelpers().computeSigningRoot(inclusionList, domain);
+  }
 }
diff --git a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SlashingProtectedSigner.java b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SlashingProtectedSigner.java
index 635dcc9eb58..50421eaf8a7 100644
--- a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SlashingProtectedSigner.java
+++ b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/signatures/SlashingProtectedSigner.java
@@ -26,6 +26,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.ContributionAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.SyncAggregatorSelectionData;
@@ -148,6 +149,12 @@ public SafeFuture<BLSSignature> signValidatorRegistration(
     return delegate.signValidatorRegistration(validatorRegistration);
   }
 
+  @Override
+  public SafeFuture<BLSSignature> signInclusionList(
+      final InclusionList inclusionList, final ForkInfo forkInfo) {
+    return delegate.signInclusionList(inclusionList, forkInfo);
+  }
+
   @Override
   public Optional<URL> getSigningServiceUrl() {
     return delegate.getSigningServiceUrl();
diff --git a/ethereum/spec/src/testFixtures/java/tech/pegasys/teku/spec/generator/signatures/NoOpSigner.java b/ethereum/spec/src/testFixtures/java/tech/pegasys/teku/spec/generator/signatures/NoOpSigner.java
index 05f6de611f2..832aad671e6 100644
--- a/ethereum/spec/src/testFixtures/java/tech/pegasys/teku/spec/generator/signatures/NoOpSigner.java
+++ b/ethereum/spec/src/testFixtures/java/tech/pegasys/teku/spec/generator/signatures/NoOpSigner.java
@@ -23,6 +23,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.ContributionAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.SyncAggregatorSelectionData;
@@ -93,6 +94,12 @@ public SafeFuture<BLSSignature> signValidatorRegistration(
     return new SafeFuture<>();
   }
 
+  @Override
+  public SafeFuture<BLSSignature> signInclusionList(
+      final InclusionList inclusionList, final ForkInfo forkInfo) {
+    return new SafeFuture<>();
+  }
+
   @Override
   public abstract Optional<URL> getSigningServiceUrl();
 }
diff --git a/validator/api/src/main/java/tech/pegasys/teku/validator/api/signer/SignType.java b/validator/api/src/main/java/tech/pegasys/teku/validator/api/signer/SignType.java
index 0fd6843c1b5..dea919b19af 100644
--- a/validator/api/src/main/java/tech/pegasys/teku/validator/api/signer/SignType.java
+++ b/validator/api/src/main/java/tech/pegasys/teku/validator/api/signer/SignType.java
@@ -28,7 +28,8 @@ public enum SignType {
   VALIDATOR_REGISTRATION("validator_registration"),
   CONTRIBUTION_AND_PROOF("contribution_and_proof"),
   BEACON_BLOCK("beacon_block"),
-  BLOB_SIDECAR("blob_sidecar");
+  BLOB_SIDECAR("blob_sidecar"),
+  INCLUSION_LIST("inclusion_list");
 
   private final String name;
 
diff --git a/validator/client/src/main/java/tech/pegasys/teku/validator/client/signer/ExternalSigner.java b/validator/client/src/main/java/tech/pegasys/teku/validator/client/signer/ExternalSigner.java
index 24ca83fb596..91bc8764f18 100644
--- a/validator/client/src/main/java/tech/pegasys/teku/validator/client/signer/ExternalSigner.java
+++ b/validator/client/src/main/java/tech/pegasys/teku/validator/client/signer/ExternalSigner.java
@@ -50,6 +50,7 @@
 import tech.pegasys.teku.spec.datastructures.builder.ValidatorRegistration;
 import tech.pegasys.teku.spec.datastructures.operations.AggregateAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.AttestationData;
+import tech.pegasys.teku.spec.datastructures.operations.InclusionList;
 import tech.pegasys.teku.spec.datastructures.operations.VoluntaryExit;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.ContributionAndProof;
 import tech.pegasys.teku.spec.datastructures.operations.versions.altair.SyncAggregatorSelectionData;
@@ -264,6 +265,16 @@ public SafeFuture<BLSSignature> signValidatorRegistration(
                 slashableGenericMessage("validator registration")));
   }
 
+  @Override
+  public SafeFuture<BLSSignature> signInclusionList(
+      final InclusionList inclusionList, final ForkInfo forkInfo) {
+    return sign(
+        signingRootUtil.signingRootForInclusionList(inclusionList, forkInfo),
+        SignType.INCLUSION_LIST,
+        Map.of(SignType.INCLUSION_LIST.getName(), inclusionList, FORK_INFO, forkInfo),
+        slashableGenericMessage("inclusion list"));
+  }
+
   @Override
   public Optional<URL> getSigningServiceUrl() {
     return Optional.of(signingServiceUrl);