diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index 8bb7936e7..60fea38e1 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -55,7 +55,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
       - name: Build wheelhouse and perform smoke test
@@ -76,7 +76,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest, macos-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
       - name: Build wheelhouse and perform smoke test
diff --git a/_package/pyproject.toml b/_package/pyproject.toml
index a6a50c8a0..39e99e52f 100644
--- a/_package/pyproject.toml
+++ b/_package/pyproject.toml
@@ -8,7 +8,7 @@ name = "pyconverter-generatedcommands"
 version = "0.1.dev0"
 description = "Documentation."
 readme = "README.rst"
-requires-python = ">=3.7"
+requires-python = ">=3.10,<4"
 license = {file = "LICENSE"}
 authors = [
     {name = "ANSYS, Inc.", email = "pyansys.core@ansys.com"},
@@ -21,10 +21,9 @@ classifiers = [
     "Development Status :: 4 - Beta",
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
 ]
 
 dependencies = [
diff --git a/pyproject.toml b/pyproject.toml
index 55907a91f..cfb8d4fd2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ name = "pyconverter-xml2py"
 version = "0.3.dev0"
 description = "PyConverter-XML2Py converter."
 readme = "README.rst"
-requires-python = ">=3.8"
+requires-python = ">=3.10,<4"
 license = {file = "LICENSE"}
 authors = [
     {name = "ANSYS, Inc.", email = "pyansys.core@ansys.com"},
@@ -20,10 +20,9 @@ classifiers = [
     "Development Status :: 4 - Beta",
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
     "click>=7.0,<9.0.0",
@@ -31,8 +30,7 @@ dependencies = [
     "pygithub>=1.59.1",
     "inflect>=7.0.0",
     "lxml>=4.9.3",
-    "numpy>=1.14.0,<1.25.0; python_version<'3.9'",
-    "numpy>=1.14.0; python_version>='3.9'",
+    "numpy>=1.14.0",
     "py-asciimath==0.3.0",
     "pylatexenc==2.10",
     "pyyaml>=5.1.0",
diff --git a/tox.ini b/tox.ini
index c005c144b..13e8db0bf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 description = Default tox environments list
 envlist =
-    style,{py38,py39,py310,py311}{,-coverage},doc
+    style,{py310,py311,py312}{,-coverage},doc
 skip_missing_interpreters = true
 isolated_build = true
 isolated_build_env = build
@@ -9,10 +9,9 @@ isolated_build_env = build
 [testenv]
 description = Checks for project unit tests and coverage (if desired)
 basepython =
-    py38: python3.8
-    py39: python3.9
     py310: python3.10
     py311: python3.11
+    py312: python3.12
     py: python3
     {style,reformat,doc}: python3
 setenv =