diff --git a/.github/workflows/python-ci-tests.yml b/.github/workflows/python-ci-tests.yml
index dc9ccc0..211aa4c 100644
--- a/.github/workflows/python-ci-tests.yml
+++ b/.github/workflows/python-ci-tests.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9, '3.10']
 
     name: Python ${{ matrix.python-version }} Build
     steps:
diff --git a/setup.py b/setup.py
index 23b95ff..499af4f 100644
--- a/setup.py
+++ b/setup.py
@@ -38,14 +38,14 @@ setup(
         'Topic :: Security',
         'License :: OSI Approved :: BSD License',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
     ],
     keywords='stix stix2 json cti cyber threat intelligence',
     packages=find_packages(exclude=['*.test', '*.test.*']),
-    python_requires='>=3.6',
+    python_requires='>=3.7',
     install_requires=[
         'pytz',
         'requests',
diff --git a/tox.ini b/tox.ini
index 90f5cfc..2697458 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py36,py37,py38,py39,packaging,pre-commit-check
+envlist = py37,py38,py39,py310,packaging,pre-commit-check
 
 [testenv]
 deps =
@@ -32,7 +32,7 @@ commands =
 
 [gh-actions]
 python =
-  3.6: py36
   3.7: py37
   3.8: py38
   3.9: py39, packaging, pre-commit-check
+  3.10: py310