diff --git a/CHANGELOG.md b/CHANGELOG.md
index 311c08f3d..52d4e012e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,8 @@
 ### Features Added
 - Signing support for BlobSidecar and BlindedBlobSidecar in Deneb fork.
 - Add `--azure-response-timeout` to allow request response timeout to be configurable, the field `timeout` is also accepted in the Azure metadata file. [#888](https://github.com/Consensys/web3signer/pull/888)
-- Bulk load Ethereum v3 wallet files in eth1 mode. 
+- Bulk load Ethereum v3 wallet files in eth1 mode.
+- Add network configuration for Holesky testnet
 
 ### Bugs fixed
 - Upcheck was using application/json accept headers instead text/plain accept headers
diff --git a/acceptance-tests/build.gradle b/acceptance-tests/build.gradle
index ab8cdf840..42d3efbb8 100644
--- a/acceptance-tests/build.gradle
+++ b/acceptance-tests/build.gradle
@@ -52,8 +52,9 @@ dependencies {
   testImplementation 'tech.pegasys.teku.internal:networks'
   testImplementation 'tech.pegasys.teku.internal:json'
   testImplementation 'tech.pegasys.teku.internal:jackson'
-  testImplementation (group: 'tech.pegasys.teku.internal', name: 'spec', classifier: 'test-fixtures')
-  testImplementation (group: 'tech.pegasys.teku.internal', name: 'bls', classifier: 'test-fixtures')
+  // Use test fixtures from Teku 23.8.0 as latest version doesn't include any test fixtures
+  testImplementation (group: 'tech.pegasys.teku.internal', name: 'spec', classifier: 'test-fixtures', version: '23.8.0')
+  testImplementation (group: 'tech.pegasys.teku.internal', name: 'bls', classifier: 'test-fixtures', version: '23.8.0')
   testImplementation 'tech.pegasys.teku.internal:serializer'
   testImplementation 'tech.pegasys.teku.internal:unsigned'
   testImplementation 'tech.pegasys.teku.internal:async'
diff --git a/acceptance-tests/src/test/resources/eth2/network_config.yaml b/acceptance-tests/src/test/resources/eth2/network_config.yaml
index c5fff184a..4bc447b4e 100644
--- a/acceptance-tests/src/test/resources/eth2/network_config.yaml
+++ b/acceptance-tests/src/test/resources/eth2/network_config.yaml
@@ -22,12 +22,9 @@ GOSSIP_MAX_SIZE: 10485760
 # `2**10` (= 1024)
 MAX_REQUEST_BLOCKS: 1024
 ## [customized] `MIN_VALIDATOR_WITHDRAWABILITY_DELAY + CHURN_LIMIT_QUOTIENT // 2` (= 272)
-#MIN_EPOCHS_FOR_BLOCK_REQUESTS: 272
+MIN_EPOCHS_FOR_BLOCK_REQUESTS: 272
 # `10 * 2**20` (=10485760, 10 MiB)
 EPOCHS_PER_SUBNET_SUBSCRIPTION: 256
-## [customized] `MIN_VALIDATOR_WITHDRAWABILITY_DELAY + CHURN_LIMIT_QUOTIENT // 2` (= 272)
-#MIN_EPOCHS_FOR_BLOCK_REQUESTS: 272
-# `10 * 2**20` (=10485760, 10 MiB)
 MAX_CHUNK_SIZE: 10485760
 # 5s
 TTFB_TIMEOUT: 5
diff --git a/gradle/versions.gradle b/gradle/versions.gradle
index d4bb79858..eecd1bd29 100644
--- a/gradle/versions.gradle
+++ b/gradle/versions.gradle
@@ -90,7 +90,7 @@ dependencyManagement {
 
     dependency 'org.xipki.iaik:sunpkcs11-wrapper:1.4.9'
 
-    dependencySet(group: 'tech.pegasys.teku.internal', version: '23.8.0') {
+    dependencySet(group: 'tech.pegasys.teku.internal', version: '23.9.0') {
       entry ('bls') {
         exclude group: 'org.bouncycastle', name: 'bcprov-jdk15on'
       }