diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ea93fa7..3f81964 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,10 +13,11 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-        - 3.6
-        - 3.7
-        - 3.8
-        - 3.9
+        - "3.6"
+        - "3.7"
+        - "3.8"
+        - "3.9"
+        - "3.10"
 
     steps:
       - uses: actions/checkout@v2
diff --git a/setup.py b/setup.py
index 56214f4..1ea8341 100755
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@ setup(
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
         "Topic :: Internet :: WWW/HTTP",
     ],
 )
diff --git a/tox.ini b/tox.ini
index c507a8b..3bba274 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{36,37,38,39}-twisted{187,latest}
+    py{36,37,38,39,310}-twisted{187,latest}
 
 [testenv]
 usedevelop = true