diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0be930d3..7359cfe4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,6 +15,7 @@ jobs:
           - "py37-pytestlatest"
           - "py38-pytestlatest"
           - "py39-pytestlatest"
+          - "py310-pytestlatest"
           - "py38-pytestmain"
           - "py38-psutil"
           - "py38-setproctitle"
@@ -29,6 +30,8 @@ jobs:
             python: "3.8"
           - tox_env: "py39-pytestlatest"
             python: "3.9"
+          - tox_env: "py310-pytestlatest"
+            python: "3.10-dev"
           - tox_env: "py38-pytestmain"
             python: "3.8"
           - tox_env: "py38-psutil"
@@ -37,9 +40,9 @@ jobs:
             python: "3.8"
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python }}
     - name: Install tox
@@ -59,9 +62,9 @@ jobs:
     needs: build
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2
       with:
         python-version: "3.7"
     - name: Install wheel
diff --git a/changelog/704.feature b/changelog/704.feature
new file mode 100644
index 00000000..d1e7f795
--- /dev/null
+++ b/changelog/704.feature
@@ -0,0 +1 @@
+Add support for Python 3.10.
diff --git a/setup.py b/setup.py
index 40b1f905..3f1c377f 100644
--- a/setup.py
+++ b/setup.py
@@ -48,5 +48,6 @@
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
     ],
 )
diff --git a/tox.ini b/tox.ini
index d5a263c7..ed569f49 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist=
   linting
-  py{36,37,38,39}-pytestlatest
+  py{36,37,38,39,310}-pytestlatest
   py38-pytestmain
   py38-psutil
   py38-setproctitle