diff --git a/.semaphore/create-release.yml b/.semaphore/create-release.yml
index 138f694..311b364 100644
--- a/.semaphore/create-release.yml
+++ b/.semaphore/create-release.yml
@@ -7,7 +7,7 @@ agent:
 global_job_config:
   prologue:
     commands:
-      - sem-version python 3.8
+      - sem-version python 3.11
       - checkout
       - python -m pip install -U pip pdm
 blocks:
diff --git a/.semaphore/semaphore.yml b/.semaphore/semaphore.yml
index 1173293..31c9845 100644
--- a/.semaphore/semaphore.yml
+++ b/.semaphore/semaphore.yml
@@ -16,7 +16,7 @@ blocks:
     task:
       prologue:
         commands:
-          - sem-version python 3.8
+          - sem-version python 3.11
           - python -m pip install -U pip pdm tox tox-pdm
       jobs:
         - name: checks
@@ -37,7 +37,6 @@ blocks:
           matrix:
             - env_var: PY_VERSION
               values:
-                - '3.8'
                 - '3.9'
                 - '3.10'
                 - '3.11'
@@ -58,7 +57,7 @@ blocks:
         - name: pypi-credentials
       prologue:
         commands:
-          - sem-version python 3.8
+          - sem-version python 3.11
           - python -m pip install -U pip pdm
       jobs:
         - name: Build and upload Python package
diff --git a/pyproject.toml b/pyproject.toml
index 882306e..c16811c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "momoa"
-version = "0.2.3"
+version = "0.3.0"
 description = "A library for definition, validation and serialisation of Python objects based on JSONSchema specifications."
 readme = "README.md"
 license = {text = "MIT"}
@@ -17,7 +17,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Topic :: File Formats :: JSON :: JSON Schema"
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dependencies = [
     "statham-schema>=0.13.5",
     "python-dateutil>=2.8.2",
diff --git a/release-notes/0.3.0.md b/release-notes/0.3.0.md
new file mode 100644
index 0000000..57c314c
--- /dev/null
+++ b/release-notes/0.3.0.md
@@ -0,0 +1 @@
+* remove support for Python 3.8
diff --git a/tox.ini b/tox.ini
index 821672b..e54a8af 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 isolated_build = true
-envlist = checks, py38, py39, py310, py311, py312
+envlist = checks, py39, py310, py311, py312
 
 [testenv]
 skip_install = true