diff --git a/.github/workflows/BuildTest_win32.yml b/.github/workflows/BuildTest_win32.yml
index de0398a..413c40b 100644
--- a/.github/workflows/BuildTest_win32.yml
+++ b/.github/workflows/BuildTest_win32.yml
@@ -9,8 +9,8 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.11"]
-#        python-version: [3.8, 3.9, 3.10, 3.11]
+        python-version: ["3.9", "3.11"]
+#        python-version: [3.9, 3.10, 3.11, 3.12]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 55bb38d..268e684 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.11" ]
+        python-version: [ "3.9", "3.11" ]
     name: Setup
     steps:
       - uses: actions/checkout@v3
@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.11" ]
+        python-version: [ "3.9", "3.11" ]
     steps:
     - uses: actions/checkout@v3
     - name: Restore venv
@@ -55,7 +55,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.11" ]
+        python-version: [ "3.9", "3.11" ]
     steps:
     - uses: actions/checkout@v3
     - name: Restore venv
@@ -98,7 +98,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.11" ]
+        python-version: [ "3.9", "3.11" ]
     steps:
     - uses: actions/checkout@v3
     - name: Restore venv
@@ -121,7 +121,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.11" ]
+        python-version: [ "3.9", "3.11" ]
     steps:
     - uses: actions/checkout@v3
     - name: Restore venv
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 22e3eb2..2a853fe 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ "3.8" ]
+        python-version: [ "3.9" ]
     # Specifying a GitHub environment is optional, but strongly encouraged
     environment: release
     permissions:
diff --git a/ci/linux/_load_dot_env.sh b/ci/linux/_load_dot_env.sh
new file mode 100644
index 0000000..434c067
--- /dev/null
+++ b/ci/linux/_load_dot_env.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+set -a
+source $1
+set +a
diff --git a/ci/linux/build_python_package.sh b/ci/linux/build_python_package.sh
index d283258..0d2d2af 100755
--- a/ci/linux/build_python_package.sh
+++ b/ci/linux/build_python_package.sh
@@ -1,7 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ "$OSTYPE" != "win32" && "$OSTYPE" != "msys" ]]; then
   echo "Activating .venv first."
   . .venv/bin/activate
 fi
+
 python -m build
diff --git a/ci/linux/create_venv.sh b/ci/linux/create_venv.sh
index c4aa8e7..71fd104 100755
--- a/ci/linux/create_venv.sh
+++ b/ci/linux/create_venv.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 python3 -m venv ./.venv
 if [[ "$OSTYPE" != "win32" && "$OSTYPE" != "msys" ]]; then
diff --git a/ci/linux/install_dependencies.sh b/ci/linux/install_dependencies.sh
index 3017358..ebd6979 100755
--- a/ci/linux/install_dependencies.sh
+++ b/ci/linux/install_dependencies.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ "$OSTYPE" != "win32" && "$OSTYPE" != "msys" ]]; then
   echo "Activating .venv first."
diff --git a/ci/linux/lint.sh b/ci/linux/lint.sh
index d732141..c2e91b5 100755
--- a/ci/linux/lint.sh
+++ b/ci/linux/lint.sh
@@ -1,7 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ "$OSTYPE" != "win32" && "$OSTYPE" != "msys" ]]; then
   echo "Activating .venv first."
   . .venv/bin/activate
 fi
+
 flake8 ./src/omotes_sdk ./unit_test/
diff --git a/ci/linux/test_unit.sh b/ci/linux/test_unit.sh
index 8fc2cdc..bff0c15 100755
--- a/ci/linux/test_unit.sh
+++ b/ci/linux/test_unit.sh
@@ -1,7 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ "$OSTYPE" != "win32" && "$OSTYPE" != "msys" ]]; then
   echo "Activating .venv first."
   . .venv/bin/activate
 fi
+
 PYTHONPATH='$PYTHONPATH:src/' pytest --junit-xml=test-results.xml unit_test/
diff --git a/ci/linux/typecheck.sh b/ci/linux/typecheck.sh
index 7f1dc63..7a64ecf 100755
--- a/ci/linux/typecheck.sh
+++ b/ci/linux/typecheck.sh
@@ -1,7 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ "$OSTYPE" != "win32" && "$OSTYPE" != "msys" ]]; then
   echo "Activating .venv first."
   . .venv/bin/activate
 fi
+
 python -m mypy ./src/omotes_sdk ./unit_test/
diff --git a/ci/win32/create_venv.cmd b/ci/win32/create_venv.cmd
index 3806ef7..2d4b97e 100644
--- a/ci/win32/create_venv.cmd
+++ b/ci/win32/create_venv.cmd
@@ -3,7 +3,7 @@ rem @echo off
 
 pushd .
 cd /D "%~dp0"
-py -3.8 -m venv ..\..\venv
+py -3.9 -m venv ..\..\venv
 call ..\..\venv\Scripts\activate.bat
 python -m pip install pip-tools
 popd
diff --git a/pyproject.toml b/pyproject.toml
index bf92994..4124e98 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "omotes-sdk-python"
-requires-python = ">=3.8.1"
+requires-python = ">=3.9"
 dynamic = ["version"]
 authors = [
     { name = "Sebastiaan la Fleur", email = "sebastiaan.lafleur@tno.nl" },
@@ -35,20 +35,23 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "pip-tools~=7.3.0",
-    "setuptools ~= 69.0.3",
-    "black ~= 22.1.0",
-    "flake8 ~= 6.1.0",
-    "Flake8-pyproject ~= 1.2.3",
+    "setuptools ~= 75.6.0",
+    "wheel ~= 0.45.1",
+    "setuptools-git-versioning >= 2.0, < 3",
+    "black ~= 24.10.0",
+    "flake8 == 7.1.1",
+    "flake8-pyproject ~= 1.2.3",
     "flake8-docstrings ~= 1.7.0",
-    "flake8-quotes ~= 3.3.2",
-    "pytest ~=7.3.1",
-    "pytest-cov ~=4.0.0",
-    "mypy ~= 1.8.0",
-    "isort ~= 5.13.2",
-    "build ~= 1.0.3",
+    "flake8-quotes ~= 3.4.0",
+    "flake8-bugbear ~= 24.10.31",
+    "flake8-mock ~= 0.4",
+    "flake8-tuple ~= 0.4.1",
+    "pytest ~= 8.3.4",
+    "pytest-cov ~= 6.0.0",
+    "mypy ~= 1.13.0",
+    "isort == 5.13.2",
+    "build ~= 1.2.2",
     "mypy-protobuf ~= 3.5.0",
-    "setuptools-git-versioning < 2",
 ]
 
 [project.urls]
@@ -60,9 +63,9 @@ changelog = "https://github.com/Nieuwe-Warmte-Nu/omotes-sdk-python/blob/main/CHA
 [build-system]
 build-backend = "setuptools.build_meta"
 requires = [
-    "setuptools ~= 69.0.3",
-    "wheel ~= 0.40.0",
-    "setuptools-git-versioning<2",
+    "setuptools ~= 75.6.0",
+    "wheel ~= 0.45.1",
+    "setuptools-git-versioning >= 2.0, < 3",
 ]
 
 [tool.setuptools.package-data]
@@ -70,6 +73,7 @@ requires = [
 
 [tool.setuptools-git-versioning]
 enabled = true
+starting_version = "0.0.1"
 
 [tool.pytest.ini_options]
 addopts = "--cov=omotes_sdk --cov-report html --cov-report term-missing --cov-fail-under 62"
diff --git a/src/omotes_sdk/omotes_interface.py b/src/omotes_sdk/omotes_interface.py
index 28b6272..972a077 100644
--- a/src/omotes_sdk/omotes_interface.py
+++ b/src/omotes_sdk/omotes_interface.py
@@ -115,7 +115,7 @@ def __init__(
         self,
         rabbitmq_config: RabbitMQConfig,
         client_id: str,
-        timeout_on_initial_workflow_definitions: timedelta = timedelta(minutes=1),
+        timeout_on_initial_workflow_definitions: timedelta = timedelta(minutes=1),  # noqa: B008
     ):
         """Create the OMOTES interface.