diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 6302260..4326509 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -8,10 +8,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Setup Python 3.10
+      - name: Setup Python 3.12
         uses: actions/setup-python@v3
         with:
-          python-version: '3.10'
+          python-version: '3.12'
       - name: Install Requirements
         run:
           pip install -r requirements.txt
diff --git a/Dockerfile b/Dockerfile
index 83f765f..afaa66a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.11
+FROM python:3.12
 COPY requirements.txt .
 RUN python -m pip install -r requirements.txt
 COPY . .
diff --git a/README.md b/README.md
index ed8a5b6..8a49d3e 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Clone Repository: <br>
     git clone https://github.com/cowprotocol/ebbo.git
 
 
-Version python 3.10 is used. <br>
+Version python 3.12 is used. <br>
 
 ### Dependencies:
 
diff --git a/requirements.txt b/requirements.txt
index 342be59..e8df969 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,10 @@
-black==23.3.0
-mypy==1.4.1
-pylint==2.17.4
-pytest==7.4.0
-python-dotenv>=0.20.0
-web3==6.5.0
-types-requests
+black
 dune-client
-hexbytes~=0.3.1
-requests~=2.31.0
+hexbytes
+mypy
+pylint
+pytest
+python-dotenv
+requests
+types-requests
+web3
diff --git a/src/apis/auctioninstanceapi.py b/src/apis/auctioninstanceapi.py
index 7f65d9f..e563b70 100644
--- a/src/apis/auctioninstanceapi.py
+++ b/src/apis/auctioninstanceapi.py
@@ -1,6 +1,7 @@
 """
 API for fetching auction instances from AWS.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from typing import Any, Optional
diff --git a/src/apis/coingeckoapi.py b/src/apis/coingeckoapi.py
index b3b50c3..d646f3a 100644
--- a/src/apis/coingeckoapi.py
+++ b/src/apis/coingeckoapi.py
@@ -1,6 +1,7 @@
 """
 CoingeckoAPI for fetching the price in usd of a given token.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from typing import Optional
diff --git a/src/apis/orderbookapi.py b/src/apis/orderbookapi.py
index f8a0054..7f7af86 100644
--- a/src/apis/orderbookapi.py
+++ b/src/apis/orderbookapi.py
@@ -1,6 +1,7 @@
 """
 OrderbookAPI for fetching relevant data using the CoW Swap Orderbook API.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from typing import Any, Optional
diff --git a/src/apis/solverapi.py b/src/apis/solverapi.py
index f0aa545..c22f01e 100644
--- a/src/apis/solverapi.py
+++ b/src/apis/solverapi.py
@@ -1,6 +1,7 @@
 """
 API for calling an http solver with auction instances.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from os import getenv
diff --git a/src/apis/tenderlyapi.py b/src/apis/tenderlyapi.py
index 8c978e4..2cdcc52 100644
--- a/src/apis/tenderlyapi.py
+++ b/src/apis/tenderlyapi.py
@@ -1,6 +1,7 @@
 """
 TenderlyAPI for simulating transactions on tenderly.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from os import getenv
diff --git a/src/apis/tokenlistapi.py b/src/apis/tokenlistapi.py
index ed415af..6faf75d 100644
--- a/src/apis/tokenlistapi.py
+++ b/src/apis/tokenlistapi.py
@@ -1,6 +1,7 @@
 """
 TokenListAPI for fetching a curated token list.
 """
+
 # pylint: disable=logging-fstring-interpolation
 from typing import Optional
 import requests
diff --git a/src/apis/web3api.py b/src/apis/web3api.py
index f475f11..4664cc6 100644
--- a/src/apis/web3api.py
+++ b/src/apis/web3api.py
@@ -1,6 +1,7 @@
 """
 Web3API for fetching relevant data using the web3 library.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from os import getenv
@@ -139,7 +140,7 @@ def get_settlement(self, transaction: TxData) -> dict[str, Any]:
         """
         Decode settlement from transaction using the settlement contract.
         """
-        return self.get_settlement_from_calldata(transaction["input"])
+        return self.get_settlement_from_calldata(transaction["input"].hex())
 
     def get_settlement_from_calldata(self, calldata: str) -> dict[str, Any]:
         """
diff --git a/src/daemon.py b/src/daemon.py
index 7e8c7af..7bb29d2 100644
--- a/src/daemon.py
+++ b/src/daemon.py
@@ -4,6 +4,7 @@
 
 If a settlement failes a test, an error level message is logged.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 import time
diff --git a/src/helper_functions.py b/src/helper_functions.py
index a211307..bb800df 100644
--- a/src/helper_functions.py
+++ b/src/helper_functions.py
@@ -1,6 +1,7 @@
 """
 This file contains some auxiliary functions
 """
+
 from __future__ import annotations
 import logging
 from typing import Optional
diff --git a/src/models.py b/src/models.py
index 3034576..53f7178 100644
--- a/src/models.py
+++ b/src/models.py
@@ -1,6 +1,7 @@
 """
 Definition of trades, orders, and executions.
 """
+
 from __future__ import annotations
 from fractions import Fraction
 from dataclasses import dataclass
diff --git a/src/monitoring_tests/base_test.py b/src/monitoring_tests/base_test.py
index 7e366e5..05c4ece 100644
--- a/src/monitoring_tests/base_test.py
+++ b/src/monitoring_tests/base_test.py
@@ -2,6 +2,7 @@
 In this file, we introduce the BaseTest class, whose purpose is to be used as the basis
 for all tests developed.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from abc import ABC, abstractmethod
diff --git a/src/monitoring_tests/buffers_monitoring_test.py b/src/monitoring_tests/buffers_monitoring_test.py
index b7115a0..0cdeb5e 100644
--- a/src/monitoring_tests/buffers_monitoring_test.py
+++ b/src/monitoring_tests/buffers_monitoring_test.py
@@ -2,6 +2,7 @@
 Checks the value of buffers every 150 settlements by invoking
 the ehtplorer api, and in some cases, coingecko.
 """
+
 # pylint: disable=logging-fstring-interpolation
 import requests
 from src.monitoring_tests.base_test import BaseTest
@@ -55,9 +56,7 @@ def compute_buffers_value(self) -> bool:
                 decimals = int(token["tokenInfo"]["decimals"])
                 if token["tokenInfo"]["price"] is not False:
                     price_in_usd = token["tokenInfo"]["price"]["rate"]
-                    token_buffer_value_in_usd = (
-                        balance / 10**decimals
-                    ) * price_in_usd
+                    token_buffer_value_in_usd = (balance / 10**decimals) * price_in_usd
                     # in case some price is way off and it blows a lot the total value held in the
                     # smart contract we use a second price feed, from coingecko, to correct in case
                     # the initial price is indeed off
@@ -70,8 +69,9 @@ def compute_buffers_value(self) -> bool:
                         coingecko_value_in_usd = (
                             balance / 10**decimals
                         ) * coingecko_price_in_usd
-                        if coingecko_value_in_usd < token_buffer_value_in_usd:
-                            token_buffer_value_in_usd = coingecko_value_in_usd
+                        token_buffer_value_in_usd = min(
+                            token_buffer_value_in_usd, coingecko_value_in_usd
+                        )
                     value_in_usd += token_buffer_value_in_usd
             log_output = f"Buffer value is {value_in_usd} USD"
             if value_in_usd > BUFFERS_VALUE_USD_THRESHOLD:
diff --git a/src/monitoring_tests/cost_coverage_zero_signed_fee.py b/src/monitoring_tests/cost_coverage_zero_signed_fee.py
index 8c52557..be0ed8e 100644
--- a/src/monitoring_tests/cost_coverage_zero_signed_fee.py
+++ b/src/monitoring_tests/cost_coverage_zero_signed_fee.py
@@ -1,6 +1,7 @@
 """
 Computing cost coverage per solver.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from typing import Any, Dict
diff --git a/src/monitoring_tests/cowamm_commitment_test.py b/src/monitoring_tests/cowamm_commitment_test.py
index 2ba9b31..63651be 100644
--- a/src/monitoring_tests/cowamm_commitment_test.py
+++ b/src/monitoring_tests/cowamm_commitment_test.py
@@ -1,6 +1,7 @@
 """
 Checks that commitments for custom CoW AMM of CoW AMM orders are reset.
 """
+
 # pylint: disable=duplicate-code
 from typing import Any
 
diff --git a/src/monitoring_tests/mev_blocker_kickbacks_test.py b/src/monitoring_tests/mev_blocker_kickbacks_test.py
index e5573a0..81db89f 100644
--- a/src/monitoring_tests/mev_blocker_kickbacks_test.py
+++ b/src/monitoring_tests/mev_blocker_kickbacks_test.py
@@ -3,6 +3,7 @@
 It generates an alert when kickbacks due to a specific settlement are
 more than KICKBACKS_ALERT_THRESHOLD
 """
+
 # pylint: disable=logging-fstring-interpolation
 from src.monitoring_tests.base_test import BaseTest
 from src.apis.web3api import Web3API
diff --git a/src/monitoring_tests/partially_fillable_cost_coverage_test.py b/src/monitoring_tests/partially_fillable_cost_coverage_test.py
index 0364170..390c704 100644
--- a/src/monitoring_tests/partially_fillable_cost_coverage_test.py
+++ b/src/monitoring_tests/partially_fillable_cost_coverage_test.py
@@ -1,6 +1,7 @@
 """
 Cost coverage test for partially fillable orders.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from web3.types import TxData, TxReceipt
diff --git a/src/monitoring_tests/reference_solver_surplus_test.py b/src/monitoring_tests/reference_solver_surplus_test.py
index c28cd60..a2d1c21 100644
--- a/src/monitoring_tests/reference_solver_surplus_test.py
+++ b/src/monitoring_tests/reference_solver_surplus_test.py
@@ -1,6 +1,7 @@
 """
 Comparing order surplus to a reference solution.
 """
+
 # pylint: disable=logging-fstring-interpolation
 # pylint: disable=duplicate-code
 
diff --git a/src/monitoring_tests/solver_competition_surplus_test.py b/src/monitoring_tests/solver_competition_surplus_test.py
index 20f372b..6840429 100644
--- a/src/monitoring_tests/solver_competition_surplus_test.py
+++ b/src/monitoring_tests/solver_competition_surplus_test.py
@@ -1,6 +1,7 @@
 """
 Comparing order surplus accross different solutions.
 """
+
 # pylint: disable=logging-fstring-interpolation
 
 from typing import Any
diff --git a/src/monitoring_tests/uniform_directed_prices_test.py b/src/monitoring_tests/uniform_directed_prices_test.py
index 9142b01..bdee44b 100644
--- a/src/monitoring_tests/uniform_directed_prices_test.py
+++ b/src/monitoring_tests/uniform_directed_prices_test.py
@@ -1,6 +1,7 @@
 """
 Checks the uniform directed prices constraint that was introduced with CIP-38
 """
+
 # pylint: disable=duplicate-code
 from typing import Any
 from fractions import Fraction
diff --git a/tests/e2e/test.py b/tests/e2e/test.py
index 43a1b23..9ee46f8 100644
--- a/tests/e2e/test.py
+++ b/tests/e2e/test.py
@@ -1,6 +1,7 @@
 """
 File to run historical block/hash testing for EBBO
 """
+
 import unittest
 from src.monitoring_tests.competition_endpoint_test.endpoint_test import EndpointTest
 from src.monitoring_tests.fee_monitoring.fee_monitoring import FeeMonitoring