diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f42424c..eb8f5d5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.11"]
+        python-version: ["3.13"]
     runs-on: ${{ matrix.os }}
     permissions:
       # Write permissions are needed to create OIDC tokens.
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5cf7a8c..5e77184 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-13, windows-latest]
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.9", "3.11", "3.13"]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/tox.ini b/tox.ini
index 4e09b02..d62cf09 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,19 @@
 [tox]
-envlist = isort, black, flake8, safety, docs, py3{8,9,10,11}, py3{8,9,10,11}-symengine
+envlist =
+     isort
+     black
+     flake8
+     safety
+     docs
+     py3{9,11,13}
+     py3{9,11,13}-symengine
+     py311-solvers
 
 [gh-actions]
 python =
-     3.8: safety, py38, py38-symengine
      3.9: safety, py39, py39-symengine
-     3.10: safety, py310, py310-symengine
-     3.11: safety, py311, py311-symengine
+     3.11: safety, py311, py311-symengine, py311-solvers
+     3.13: safety, py313, py313-symengine
 
 ;[testenv]
 ;deps =
@@ -25,12 +32,13 @@ deps =
      pytest
      pytest-cov
      scipy
-     numpy >=1.13,<1.24
+     numpy >=1.13
      osqp >=0.6.2
      mip >=1.9.1
      highspy >=1.5.3
-     cplex
-     gurobipy
+     solvers:
+          cplex
+          gurobipy
      symengine: symengine
 passenv = CI
 commands =