diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 81be6a9..f74a954 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -22,7 +22,10 @@ jobs:
       - uses: actions/checkout@v2.3.5
         with:
           submodules: 'recursive'
-      - uses: ammaraskar/sphinx-action@0.4
-        with:
-          docs-folder: "doc/"
-          pre-build-command: "apt-get update -y && apt-get install -y git python3-sphinx graphviz libenchant1c2a"
\ No newline at end of file
+      - name: Install packages
+        run:
+          sudo apt-get update -y &&
+          sudo apt-get install -y git python3-sphinx graphviz libenchant1c2a &&
+          sudo pip install tox
+      - name: Test doc build
+        run: tox -e docs
diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index b4719a5..fc46967 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
 
     steps:
     - uses: actions/checkout@v2.3.5
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 32ab8c0..ca826d1 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,11 +1,14 @@
 {
-    "restructuredtext.confPath": "${workspaceFolder}/doc",
-    "files.watcherExclude": {
-        "**/.git/objects/**": true,
-        "**/.git/subtree-cache/**": true,
-        "**/node_modules/*/**": true,
-        "**/.eggs/**": true,
-        "**/.hypothesis/**": true,
-        "**/.tox/**": true,
-      }
+  "restructuredtext.confPath": "${workspaceFolder}/doc",
+  "files.watcherExclude": {
+    "**/.git/objects/**": true,
+    "**/.git/subtree-cache/**": true,
+    "**/node_modules/*/**": true,
+    "**/.eggs/**": true,
+    "**/.hypothesis/**": true,
+    "**/.tox/**": true,
+  },
+  "editor.formatOnSave": true,
+  "editor.formatOnPaste": true,
+  "python.formatting.provider": "black",
 }
\ No newline at end of file
diff --git a/doc/conf.py b/doc/conf.py
index e81e20b..24d0b05 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -15,11 +15,9 @@
 import sys
 import os
 
+from importlib.metadata import version as imp_version
+
 on_rtd = os.getenv("READTHEDOCS") == "True"
-if on_rtd:
-    import escpos
-else:
-    from setuptools_scm import get_version
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -75,14 +73,9 @@ copyright = u"2016, Manuel F Martinez and others"
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-if on_rtd:
-    # The full version, including alpha/beta/rc tags.
-    release = escpos.__version__
-else:
-    # locally setuptools_scm should work
-    release = get_version(root=root)
+release = imp_version("python-escpos")
 # The short X.Y version.
-version = ".".join(release.split(".")[:2])  # The short X.Y version.
+version = ".".join(release.split(".")[:2])
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/doc/requirements.txt b/doc/requirements.txt
index 728e22d..09e59da 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -6,5 +6,5 @@ sphinx-rtd-theme
 setuptools
 setuptools-scm
 docutils>=0.12
-sphinxcontrib-spelling>=5
+sphinxcontrib-spelling>=7.2.0
 python-barcode>=0.11.0,<1
diff --git a/setup.cfg b/setup.cfg
index 3423563..ef78c82 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,6 +22,7 @@ classifiers =
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
     Programming Language :: Python :: Implementation :: CPython
     Topic :: Software Development :: Libraries :: Python Modules
     Topic :: Office/Business :: Financial :: Point-Of-Sale
@@ -59,7 +60,7 @@ tests_require =
     mock
     hypothesis>4
     flake8
-    sphinxcontrib-spelling>=5
+    sphinxcontrib-spelling>=7.2.0
 
 [nosetests]
 verbosity=3
diff --git a/tox.ini b/tox.ini
index 1501eb8..ea27473 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py35, py36, py37, py38, docs, flake8
+envlist = py35, py36, py37, py38, py39, py310, docs, flake8
 
 [gh-actions]
 python =
@@ -7,6 +7,8 @@ python =
     3.6: py36
     3.7: py37
     3.8: py38
+    3.9: py39
+    3.10: py310
 
 [testenv]
 deps = nose
@@ -25,10 +27,11 @@ passenv = ESCPOS_CAPABILITIES_PICKLE_DIR ESCPOS_CAPABILITIES_FILE CI TRAVIS TRAV
 [testenv:docs]
 basepython = python
 changedir = doc
-deps = sphinx>=1.5.1
+deps = sphinx>=3.0.0
        setuptools_scm
        python-barcode
-       sphinxcontrib-spelling>=5
+       sphinxcontrib-spelling>=7.2.0
+       sphinx_rtd_theme
 commands = sphinx-build -W -b html -d {envtmpdir}/doctrees .  {envtmpdir}/html
 
 [testenv:flake8]