diff --git a/CHANGELOG.md b/CHANGELOG.md
index d86ec33822a..e2c1a0f887b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ For information on changes in released versions of Teku, see the [releases page]
  - Changed the builder `is online\is offline` logs to `is available\is not available`
  - Added `/eth/v1/beacon/states/{state_id}/randao` to beacon-api.
  - Block timing tracking is now enabled by default. The `--Xmetrics-block-timing-tracking-enabled` option has been renamed to `--metrics-block-timing-tracking-enabled`.
+-  Updated TDD for Gnosis
 
 ### Bug Fixes
  - Fix missing status filters (active, pending, exited, withdrawal) for the `/eth/v1/beacon/states/{state_id}/validators` endpoint
diff --git a/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/gnosis.yaml b/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/gnosis.yaml
index f786e941117..3d908bcba5b 100644
--- a/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/gnosis.yaml
+++ b/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/gnosis.yaml
@@ -8,8 +8,8 @@ CONFIG_NAME: 'gnosis'
 
 # Transition
 # ---------------------------------------------------------------
-# TBD, 2**256-2**10 is a placeholder
-TERMINAL_TOTAL_DIFFICULTY: 115792089237316195423570985008687907853269984665640564039457584007913129638912
+# Estimated on Dec 5, 2022
+TERMINAL_TOTAL_DIFFICULTY: 8626000000000000000000058750000000000000000000
 # By default, don't use these params
 TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
 TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615
@@ -38,7 +38,7 @@ ALTAIR_FORK_VERSION: 0x01000064
 ALTAIR_FORK_EPOCH: 512
 # Merge
 BELLATRIX_FORK_VERSION: 0x02000064
-BELLATRIX_FORK_EPOCH: 18446744073709551615
+BELLATRIX_FORK_EPOCH: 385536 # 2022-11-30T19:23:40.000Z
 # Capella
 CAPELLA_FORK_VERSION: 0x03000064
 CAPELLA_FORK_EPOCH: 18446744073709551615
@@ -80,7 +80,8 @@ CHURN_LIMIT_QUOTIENT: 4096
 
 # Fork choice
 # ---------------------------------------------------------------
-PROPOSER_SCORE_BOOST: 70
+# 40%
+PROPOSER_SCORE_BOOST: 40
 
 
 # Deposit contract
diff --git a/ethereum/spec/src/test/java/tech/pegasys/teku/spec/SpecFactoryTest.java b/ethereum/spec/src/test/java/tech/pegasys/teku/spec/SpecFactoryTest.java
index bca038b520e..8817f6308f3 100644
--- a/ethereum/spec/src/test/java/tech/pegasys/teku/spec/SpecFactoryTest.java
+++ b/ethereum/spec/src/test/java/tech/pegasys/teku/spec/SpecFactoryTest.java
@@ -35,7 +35,7 @@
 
 public class SpecFactoryTest {
 
-  private static final Set<String> NON_BELLATRIX_NETWORKS = Set.of("gnosis", "swift", "less-swift");
+  private static final Set<String> NON_BELLATRIX_NETWORKS = Set.of("swift", "less-swift");
 
   @Test
   public void defaultFactoryShouldScheduleAltairAndBellatrixForMainNet() {