diff --git a/.github/workflows/run-pytest.yml b/.github/workflows/run-pytest.yml
index ecc112a7a..61c31d440 100644
--- a/.github/workflows/run-pytest.yml
+++ b/.github/workflows/run-pytest.yml
@@ -34,6 +34,9 @@ jobs:
         run: |
           echo TENDERLY_FORK=$TENDERLY_FORK > .env
           echo WEB3_ALCHEMY_PROJECT_ID=$WEB3_ALCHEMY_PROJECT_ID >> .env
+          echo WEB3_ALCHEMY_BASE=$WEB3_ALCHEMY_BASE >> .env
+          echo WEB3_FANTOM=$WEB3_FANTOM >> .env
+          echo WEB3_MANTLE=$WEB3_MANTLE >> .env
           echo ETHERSCAN_TOKEN=$ETHERSCAN_TOKEN >> .env
           echo DEFAULT_MIN_PROFIT_BNT=$DEFAULT_MIN_PROFIT_BNT >> .env
           echo ETH_PRIVATE_KEY_BE_CAREFUL=$ETH_PRIVATE_KEY_BE_CAREFUL >> .env
@@ -41,6 +44,9 @@ jobs:
         env:
           TENDERLY_FORK: '${{ secrets.TENDERLY_FORK }}'
           WEB3_ALCHEMY_PROJECT_ID: '${{ secrets.WEB3_ALCHEMY_PROJECT_ID }}'
+          WEB3_ALCHEMY_BASE: '${{ secrets.WEB3_ALCHEMY_BASE }}'
+          WEB3_FANTOM: '${{ secrets.WEB3_FANTOM }}'
+          WEB3_MANTLE: '${{ secrets.WEB3_MANTLE }}'
           ETHERSCAN_TOKEN: '${{ secrets.ETHERSCAN_TOKEN }}'
           DEFAULT_MIN_PROFIT_BNT: '${{ secrets.DEFAULT_MIN_PROFIT_BNT }}'
           ETH_PRIVATE_KEY_BE_CAREFUL: '${{ secrets.ETH_PRIVATE_KEY_BE_CAREFUL }}'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae62ef084..22543d906 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,21 +1,26 @@
 # Changelog
 
-## [Unreleased](https://github.com/bancorprotocol/fastlane-bot/tree/HEAD)
+## [v3.1.5](https://github.com/bancorprotocol/fastlane-bot/tree/v3.1.5) (2024-04-09)
 
-[Full Changelog](https://github.com/bancorprotocol/fastlane-bot/compare/v3.1.4...HEAD)
+[Full Changelog](https://github.com/bancorprotocol/fastlane-bot/compare/v3.1.4...v3.1.5)
 
 - Carbon strategies are duplicated from events [\#521](https://github.com/bancorprotocol/fastlane-bot/issues/521)
 
+- Add support for puffs\_penthouse uniswap\_v3 fork [\#524](https://github.com/bancorprotocol/fastlane-bot/pull/524) ([NIXBNT](https://github.com/NIXBNT))
+
 ## [v3.1.4](https://github.com/bancorprotocol/fastlane-bot/tree/v3.1.4) (2024-04-08)
 
 [Full Changelog](https://github.com/bancorprotocol/fastlane-bot/compare/v3.1.3...v3.1.4)
 
 - GPU token external liquidity not found [\#515](https://github.com/bancorprotocol/fastlane-bot/issues/515)
+- Hotfix - Carbon strategies duplicated [\#522](https://github.com/bancorprotocol/fastlane-bot/pull/522) ([Lesigh-3100](https://github.com/Lesigh-3100))
 
 ## [v3.1.3](https://github.com/bancorprotocol/fastlane-bot/tree/v3.1.3) (2024-04-04)
 
 [Full Changelog](https://github.com/bancorprotocol/fastlane-bot/compare/v3.1.2...v3.1.3)
 
+- gpu external sources added to event mapping [\#517](https://github.com/bancorprotocol/fastlane-bot/pull/517) ([NIXBNT](https://github.com/NIXBNT))
+
 Closed issues
 
 - All files should have doc strings [\#438](https://github.com/bancorprotocol/fastlane-bot/issues/438)
diff --git a/fastlane_bot/__init__.py b/fastlane_bot/__init__.py
index 5b0b06311..72f5d12e9 100644
--- a/fastlane_bot/__init__.py
+++ b/fastlane_bot/__init__.py
@@ -12,4 +12,4 @@
 from .config import Config, ConfigNetwork, ConfigDB, ConfigLogger, ConfigProvider
 
 
-__version__ = "3.1.5"
+__version__ = "3.1.6"
diff --git a/fastlane_bot/config/constants.py b/fastlane_bot/config/constants.py
index c5075dbed..090f2d323 100644
--- a/fastlane_bot/config/constants.py
+++ b/fastlane_bot/config/constants.py
@@ -26,6 +26,5 @@
 FUSIONX_V3_NAME = "fusionx_v3"
 CLEOPATRA_V3_NAME = "cleopatra_v3"
 CARBON_V1_NAME = "carbon_v1"
-CARBON_V1_FORK1_NAME = "altered_carbon"
 VELOCIMETER_V2_NAME = "velocimeter_v2"
 SOLIDLY_V2_NAME = "solidly_v2"
diff --git a/fastlane_bot/config/network.py b/fastlane_bot/config/network.py
index 4e82154f5..6c85d5287 100644
--- a/fastlane_bot/config/network.py
+++ b/fastlane_bot/config/network.py
@@ -19,7 +19,7 @@
 
 from . import selectors as S
 from .base import ConfigBase
-from .constants import CARBON_V1_FORK1_NAME, CARBON_V1_NAME
+from .constants import CARBON_V1_NAME
 load_dotenv()
 
 from decimal import Decimal
@@ -216,7 +216,6 @@ class ConfigNetwork(ConfigBase):
     SUSHISWAP_V2_NAME = "sushiswap_v2"
     SUSHISWAP_V3_NAME = "sushiswap_v3"
     CARBON_V1_NAME = CARBON_V1_NAME
-    CARBON_V1_X2_NAME = CARBON_V1_FORK1_NAME
     BANCOR_POL_NAME = "bancor_pol"
     BALANCER_NAME = "balancer"
     PANCAKESWAP_V2_NAME = "pancakeswap_v2"
@@ -244,8 +243,6 @@ class ConfigNetwork(ConfigBase):
 
     GAS_ORACLE_ADDRESS = None
 
-    CARBON_V1_FORKS = [CARBON_V1_NAME, CARBON_V1_X2_NAME]
-
     MULTICALLABLE_EXCHANGES = [BANCOR_V3_NAME, BANCOR_POL_NAME, BALANCER_NAME]
     # BANCOR POL
     BANCOR_POL_START_BLOCK = 18184448
diff --git a/fastlane_bot/data/multichain_addresses.csv b/fastlane_bot/data/multichain_addresses.csv
index 7e708bd6e..ce5ed8167 100644
--- a/fastlane_bot/data/multichain_addresses.csv
+++ b/fastlane_bot/data/multichain_addresses.csv
@@ -81,7 +81,7 @@ agni_v3,mantle,uniswap_v3,0x25780dc8Fc3cfBD75F33bFDAB65e969b603b2035,0x319B69888
 puffs_penthouse_v3,mantle,uniswap_v3,0x8f140Fc3e9211b8DC2fC1D7eE3292F6817C5dD5D,0x58b3a3797FF02B934a7d69D00873889F33Fb8829,,59915640,
 butter_v3,mantle,uniswap_v3,0xEECa0a86431A7B42ca2Ee5F479832c3D4a4c2644,0xAe5c0a73bAE513fe5842DbcB8E32fc7E3e30DA57,,22966090,
 carbon_v1,mantle,carbon_v1,0x7900f766F06e361FDDB4FdeBac5b138c4EEd8d4A,0x7900f766F06e361FDDB4FdeBac5b138c4EEd8d4A,,,
-some_carbon_fork,mantle,carbon_v1,0x3749f6Ef09B0f74CD5324126b02d867A03DEE844,0x3749f6Ef09B0f74CD5324126b02d867A03DEE844,,,
+fusionx_supernova,mantle,carbon_v1,0x04FBC7f949326fFf7Fe4D6aE96BAfa3D8e8A8c0a,0x04FBC7f949326fFf7Fe4D6aE96BAfa3D8e8A8c0a,,61955475,
 cleopatra_v2,mantle,solidly_v2,0xAAA16c016BF556fcD620328f0759252E29b1AB57,0xAAA45c8F5ef92a000a121d102F4e89278a711Faa,,34705175,
 cleopatra_v3,mantle,uniswap_v3,0xAAA32926fcE6bE95ea2c51cB4Fcb60836D320C42,0xAAAE99091Fbb28D400029052821653C1C752483B,,34705175,
 fusionx_v2,mantle,uniswap_v2,0xE5020961fA51ffd3662CDf307dEf18F9a87Cce7c,0xDd0840118bF9CCCc6d67b2944ddDfbdb995955FD,0.003,2868,