diff --git a/.github/workflows/spectrumdevice-docs-pages.yml b/.github/workflows/spectrumdevice-docs-pages.yml
index ea4f37f..810c305 100644
--- a/.github/workflows/spectrumdevice-docs-pages.yml
+++ b/.github/workflows/spectrumdevice-docs-pages.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Python 3.10
       uses: actions/setup-python@v3
       with:
-        python-version: "3.10"
+        python-version: "3.12"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/.github/workflows/spectrumdevice-integration-tests.yml b/.github/workflows/spectrumdevice-integration-tests.yml
index 8609c8e..e461630 100644
--- a/.github/workflows/spectrumdevice-integration-tests.yml
+++ b/.github/workflows/spectrumdevice-integration-tests.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/spectrumdevice-unit-tests.yml b/.github/workflows/spectrumdevice-unit-tests.yml
index 8f191e5..e784903 100644
--- a/.github/workflows/spectrumdevice-unit-tests.yml
+++ b/.github/workflows/spectrumdevice-unit-tests.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v3
diff --git a/setup.cfg b/setup.cfg
index c0db2ea..f8496ff 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,7 +16,6 @@ classifiers =
  Operating System :: POSIX :: Linux
  Operating System :: Microsoft :: Windows :: Windows 10
  Operating System :: MacOS :: MacOS X
- Programming Language :: Python :: 3.9
  Programming Language :: Python :: 3.10
  Programming Language :: Python :: 3.11
  Programming Language :: Python :: 3.12
@@ -35,7 +34,7 @@ package_dir =
 include_package_data = True
 install_requires =
  numpy>=1.26.2
-python_requires = >=3.8
+python_requires = >=3.10
 
 [options.packages.find]
 where = src
diff --git a/src/spectrumdevice/measurement.py b/src/spectrumdevice/measurement.py
index c0f165c..7c8cb74 100644
--- a/src/spectrumdevice/measurement.py
+++ b/src/spectrumdevice/measurement.py
@@ -1,6 +1,5 @@
 from datetime import datetime
 from dataclasses import dataclass
-from typing import List, Optional
 
 from numpy import int16, float64
 from numpy.typing import NDArray
@@ -14,7 +13,7 @@
 class Measurement:
     """Measurement is a dataclass for storing a set of waveforms generated by a single acquisition, with a timestamp."""
 
-    waveforms: List[VoltageWaveformType] | List[RawWaveformType]
+    waveforms: list[VoltageWaveformType] | list[RawWaveformType]
     """Contains the acquired waveforms as a list of 1D NumPy arrays or either floats or ints"""
-    timestamp: Optional[datetime]
+    timestamp: datetime | None
     """The time at which the acquisition was triggered, as a datetime.datetime object"""