diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9bffda3d31..6558b740bfb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,3 +11,4 @@
 ### Additions and Improvements
 
 ### Bug Fixes
+- Fixed an issue with the `/eth/v1/config/spec` API not returning all previously included configuration parameters.
\ No newline at end of file
diff --git a/data/beaconrestapi/src/main/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpec.java b/data/beaconrestapi/src/main/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpec.java
index 4dbc4ce083c..f50128e6279 100644
--- a/data/beaconrestapi/src/main/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpec.java
+++ b/data/beaconrestapi/src/main/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpec.java
@@ -53,7 +53,7 @@ public GetSpec(final DataProvider dataProvider) {
   @Override
   public void handleRequest(final RestApiRequest request) throws JsonProcessingException {
     try {
-      final SpecConfigData responseContext = new SpecConfigData(configProvider.getGenesisSpec());
+      final SpecConfigData responseContext = new SpecConfigData(configProvider.getSpecConfig());
       request.respondOk(responseContext.getConfigMap());
     } catch (JsonProcessingException e) {
       String message =
diff --git a/data/beaconrestapi/src/test/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpecTest.java b/data/beaconrestapi/src/test/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpecTest.java
index b3955ab293c..e5562790e50 100644
--- a/data/beaconrestapi/src/test/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpecTest.java
+++ b/data/beaconrestapi/src/test/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpecTest.java
@@ -28,7 +28,7 @@
 
 class GetSpecTest extends AbstractMigratedBeaconHandlerTest {
   private final ConfigProvider configProvider = new ConfigProvider(spec);
-  private final SpecConfigData response = new SpecConfigData(configProvider.getGenesisSpecConfig());
+  private final SpecConfigData response = new SpecConfigData(configProvider.getSpecConfig());
 
   @BeforeEach
   void setUp() {
diff --git a/data/provider/src/main/java/tech/pegasys/teku/api/ConfigProvider.java b/data/provider/src/main/java/tech/pegasys/teku/api/ConfigProvider.java
index 5770ec16ca9..2f0688ba368 100644
--- a/data/provider/src/main/java/tech/pegasys/teku/api/ConfigProvider.java
+++ b/data/provider/src/main/java/tech/pegasys/teku/api/ConfigProvider.java
@@ -30,12 +30,13 @@ public ConfigProvider(final Spec spec) {
   }
 
   public Map<String, String> getConfig() {
-    final SpecConfigData configuration = new SpecConfigData(spec.getGenesisSpecConfig());
+    final SpecConfigData configuration =
+        new SpecConfigData(spec.getSpecConfigAndParent().specConfig());
     return configuration.getConfigMap();
   }
 
-  public SpecConfig getGenesisSpec() {
-    return spec.atEpoch(UInt64.ZERO).getConfig();
+  public SpecConfig getSpecConfig() {
+    return spec.getSpecConfigAndParent().specConfig();
   }
 
   public static String formatValue(final Object v) {