diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 2c79a2f..a086c0d 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -9,7 +9,7 @@ jobs:
     - name: Setup python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.12
         architecture: x64
     - uses: actions/cache@v1
       with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2d111d6..afc8581 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python-version: [ '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: [ '3.9', '3.10', '3.11', '3.12']
         jsonref-version: ["==0.3", ">1"]
     steps:
     - uses: actions/checkout@v2
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 475ea97..655c6fd 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -9,7 +9,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.8"
+    python: "3.12"
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20bc107..18742d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - Avoid deprecation warning from the ijson package.  https://github.com/OpenDataServices/flatten-tool/pull/458
 
+### Removed
+
+- We no longer support Python 3.7 - security support has ended
+- We no longer support Python 3.8 - security support ends 31 Oct 2024
+
 ## [0.26.0] - 2024-08-22
 
 ### Fixed
diff --git a/examples/help/create-template/expected.txt b/examples/help/create-template/expected.txt
index 8cad1d8..8b2c468 100644
--- a/examples/help/create-template/expected.txt
+++ b/examples/help/create-template/expected.txt
@@ -7,7 +7,7 @@ usage: flatten-tool create-template [-h] -s SCHEMA [-f {csv,ods,xlsx,all}]
                                     [--line-terminator LINE_TERMINATOR]
                                     [--convert-wkt]
 
-optional arguments:
+options:
   -h, --help            show this help message and exit
   -s SCHEMA, --schema SCHEMA
                         Path to the schema file you want to use to create the
diff --git a/examples/help/flatten/expected.txt b/examples/help/flatten/expected.txt
index 44dae80..758da1c 100644
--- a/examples/help/flatten/expected.txt
+++ b/examples/help/flatten/expected.txt
@@ -16,7 +16,7 @@ usage: flatten-tool flatten [-h] [-s SCHEMA] [-f {csv,ods,xlsx,all}] [--xml]
 positional arguments:
   input_name            Name of the input JSON file.
 
-optional arguments:
+options:
   -h, --help            show this help message and exit
   -s SCHEMA, --schema SCHEMA
                         Path to a relevant schema.
diff --git a/examples/help/unflatten/expected.txt b/examples/help/unflatten/expected.txt
index c3e3a84..06782b0 100644
--- a/examples/help/unflatten/expected.txt
+++ b/examples/help/unflatten/expected.txt
@@ -10,7 +10,7 @@ usage: flatten-tool unflatten [-h] -f {csv,ods,xlsx} [--xml]
                               [--metatab-schema METATAB_SCHEMA]
                               [--metatab-only]
                               [--metatab-vertical-orientation]
-                              [--xml-schema [XML_SCHEMA [XML_SCHEMA ...]]]
+                              [--xml-schema [XML_SCHEMA ...]]
                               [--default-configuration DEFAULT_CONFIGURATION]
                               [--root-is-list] [--disable-local-refs]
                               [--xml-comment XML_COMMENT] [--convert-wkt]
@@ -19,7 +19,7 @@ usage: flatten-tool unflatten [-h] -f {csv,ods,xlsx} [--xml]
 positional arguments:
   input_name            Name of the input file or directory.
 
-optional arguments:
+options:
   -h, --help            show this help message and exit
   -f {csv,ods,xlsx}, --input-format {csv,ods,xlsx}
                         File format of input file or directory.
@@ -65,7 +65,7 @@ optional arguments:
   --metatab-vertical-orientation
                         Read metatab so that headings are in the first column
                         and data is read vertically. Only for XLSX not CSV
-  --xml-schema [XML_SCHEMA [XML_SCHEMA ...]]
+  --xml-schema [XML_SCHEMA ...]
                         Path to one or more XML schemas (used for sorting)
   --default-configuration DEFAULT_CONFIGURATION
                         Comma separated list of default parsing commands for
diff --git a/flattentool/tests/test_docs.py b/flattentool/tests/test_docs.py
index f44cbe8..5c8cac3 100644
--- a/flattentool/tests/test_docs.py
+++ b/flattentool/tests/test_docs.py
@@ -17,9 +17,9 @@ def _get_examples_in_docs_data():
     examples_in_docs_data_geo = []
     for root, dirs, files in os.walk("examples"):
         for filename in files:
-            if root.startswith("examples/help/") and sys.version_info[:2] != (3, 8):
+            if root.startswith("examples/help/") and sys.version_info[:2] != (3, 12):
                 # Different versions of python produce differently formatted help output.
-                # We only test in one version, Python 3.8.
+                # We only test in one version, Python 3.12.
                 # (Same as we lint code with, so dev's can have one virtual env)
                 continue
             if "cmd.txt" in filename:
@@ -154,7 +154,7 @@ def _test_example_in_doc_worker(root, filename):
 def test_expected_number_of_examples_in_docs_data():
     expected = 68
     # See _get_examples_in_docs_data()
-    if sys.version_info[:2] != (3, 8):
+    if sys.version_info[:2] != (3, 12):
         expected -= 3
         # number of help tests
     assert len(examples_in_docs_data) + len(examples_in_docs_data_geo) == expected
diff --git a/flattentool/tests/test_json_input.py b/flattentool/tests/test_json_input.py
index acfbf15..a2f3c20 100644
--- a/flattentool/tests/test_json_input.py
+++ b/flattentool/tests/test_json_input.py
@@ -2,7 +2,6 @@
 from __future__ import unicode_literals
 
 import os
-import sys
 from collections import OrderedDict
 from decimal import Decimal
 
@@ -990,24 +989,10 @@ def test_parse_bad_geojson(recwarn):
         str(w.message) == "Invalid GeoJSON: TypeError(\"'int' object is not iterable\")"
     )
     w = recwarn.pop(UserWarning)
-    # There are different warning messages for Python versions before 3.8. This
-    # is because an old version of numpy is installed (the last compatible with
-    # these versions of Python), which has different messages.
-    if sys.version_info < (3, 8):
-        assert (
-            str(w.message)
-            == "Creating an ndarray from ragged nested sequences (which is a list-or-tuple of lists-or-tuples-or ndarrays with different lengths or shapes) is deprecated. If you meant to do this, you must specify 'dtype=object' when creating the ndarray."
-        )
-        w = recwarn.pop(UserWarning)
-        assert (
-            str(w.message)
-            == "Invalid GeoJSON: ValueError('linestrings: Input operand 0 does not have enough dimensions (has 1, gufunc core with signature (i, d)->() requires 2)')"
-        )
-    else:
-        assert (
-            str(w.message)
-            == "Invalid GeoJSON: ValueError('setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (3,) + inhomogeneous part.')"
-        )
+    assert (
+        str(w.message)
+        == "Invalid GeoJSON: ValueError('setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (3,) + inhomogeneous part.')"
+    )
     assert len(recwarn.list) == 0
 
 
diff --git a/setup.py b/setup.py
index d988807..89fd151 100644
--- a/setup.py
+++ b/setup.py
@@ -59,4 +59,5 @@ def run(self):
     },
     package_data={"flattentool": ["locale/*/*/*.mo", "locale/*/*/*.po"]},
     setup_requires=["babel"],
+    python_requires=">=3.9.0",
 )