diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 2cafe88..0ee453e 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9, '3.10', '3.11']
+        python-version: [3.8, 3.9, '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v3
diff --git a/.python-version b/.python-version
deleted file mode 100644
index 68c0e70..0000000
--- a/.python-version
+++ /dev/null
@@ -1,5 +0,0 @@
-3.8.0
-3.7.5
-3.6.9
-3.5.8
-2.7.17
diff --git a/tox.ini b/tox.ini
index 31e772c..24f555e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,19 +4,19 @@ skip_missing_interpreters=True
 envlist=
     readme
     begin
-    py{38,39,310}-django-{32,40,41}
-    py{311}-django-{41}
+    py{310,311,312,313}-django-{51,52}
+    py{38,39,310,311,312}-django-{42}
     end
-    {mariadb,postgresql}-django-41
+    {mariadb,postgresql}-django-42
 
 [testenv]
 commands=
     pytest --pyargs --cov={envsitepackagesdir}/attachments attachments
 deps=
-    django-32: Django==3.2.*
-    django-40: Django==4.0.*
-    django-41: Django==4.1.*
-    postgresql: psycopg2-binary
+    django-42: Django==4.2.*
+    django-51: Django==5.1.*
+    django-52: Django==5.2
+    postgresql: psycopg[binary]
     mariadb: mysqlclient
     coverage
 setenv =
@@ -37,10 +37,11 @@ commands=
     coverage html
 
 [testenv:readme]
+basepython = python3.11
 skip_install = True
 deps =
     docutils
     Pygments
 commands =
-    rst2html.py --report=info --halt=warning README.rst /dev/null
-    rst2html.py --report=info --halt=warning CHANGELOG.rst /dev/null
+    rst2html5 --report=info --halt=warning README.rst /dev/null
+    rst2html5 --report=info --halt=warning CHANGELOG.rst /dev/null