diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 09361f4..f323f9b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-20.04 ]
-        python-version: [ 3.8 ]
+        python-version: [ 3.8, 3.11 ]
         toxenv: [ py38, quality ]
 
     steps:
diff --git a/calc/__init__.py b/calc/__init__.py
index 434fcd9..1a9b5fa 100644
--- a/calc/__init__.py
+++ b/calc/__init__.py
@@ -6,4 +6,4 @@
 
 from .calc import *
 
-__version__ = '3.0.1'
+__version__ = '3.1.0'
diff --git a/calc/calc.py b/calc/calc.py
index bee9310..1fea477 100644
--- a/calc/calc.py
+++ b/calc/calc.py
@@ -127,7 +127,11 @@ def eval_number(parse_result):
     e.g. [ '7.13', 'e', '3' ] ->  7130
     Calls super_float above.
     """
-    return super_float("".join(parse_result))
+    for item in parse_result:
+        if "." in item or "e" in item or "E" in item:
+            return super_float("".join(parse_result))
+
+    return int("".join(parse_result))
 
 
 def eval_atom(parse_result):
@@ -185,7 +189,7 @@ def eval_sum(parse_result):
 
     Allow a leading + or -.
     """
-    total = 0.0
+    total = 0
     current_op = operator.add
     for token in parse_result:
         if token == '+':
@@ -203,7 +207,7 @@ def eval_product(parse_result):
 
     [ 1, '*', 2, '/', 3 ] -> 0.66
     """
-    prod = 1.0
+    prod = 1
     current_op = operator.mul
     for token in parse_result:
         if token == '*':
diff --git a/requirements/base.txt b/requirements/base.txt
index e42ef85..c3accbc 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-lxml==5.1.0
+lxml==5.2.1
     # via -r requirements/base.in
 markupsafe==2.1.5
     # via -r requirements/base.in
diff --git a/requirements/ci.txt b/requirements/ci.txt
index c45838a..53fbcda 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -30,7 +30,7 @@ distlib==0.3.8
     #   virtualenv
 docopt==0.6.2
     # via coveralls
-filelock==3.13.1
+filelock==3.13.3
     # via
     #   -r requirements/tox.txt
     #   tox
@@ -62,7 +62,7 @@ tomli==2.0.1
     #   -r requirements/tox.txt
     #   pyproject-api
     #   tox
-tox==4.14.1
+tox==4.14.2
     # via -r requirements/tox.txt
 urllib3==2.2.1
     # via requests
diff --git a/requirements/pip_tools.txt b/requirements/pip_tools.txt
index 152da44..e64299a 100644
--- a/requirements/pip_tools.txt
+++ b/requirements/pip_tools.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-build==1.1.1
+build==1.2.1
     # via pip-tools
 click==8.1.7
     # via pip-tools
diff --git a/requirements/test.txt b/requirements/test.txt
index f9dda99..597918f 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -31,7 +31,7 @@ distlib==0.3.8
     # via virtualenv
 edx-lint==5.3.6
     # via -r requirements/test.in
-filelock==3.13.1
+filelock==3.13.3
     # via
     #   tox
     #   virtualenv
@@ -39,7 +39,7 @@ isort==5.13.2
     # via pylint
 jinja2==3.1.3
     # via code-annotations
-lxml==5.1.0
+lxml==5.2.1
     # via -r requirements/base.txt
 markupsafe==2.1.5
     # via
@@ -110,7 +110,7 @@ tomli==2.0.1
     #   tox
 tomlkit==0.12.4
     # via pylint
-tox==4.14.1
+tox==4.14.2
     # via -r requirements/test.in
 typing-extensions==4.10.0
     # via
diff --git a/requirements/tox.txt b/requirements/tox.txt
index daf54ce..cc5293d 100644
--- a/requirements/tox.txt
+++ b/requirements/tox.txt
@@ -12,7 +12,7 @@ colorama==0.4.6
     # via tox
 distlib==0.3.8
     # via virtualenv
-filelock==3.13.1
+filelock==3.13.3
     # via
     #   tox
     #   virtualenv
@@ -32,7 +32,7 @@ tomli==2.0.1
     # via
     #   pyproject-api
     #   tox
-tox==4.14.1
+tox==4.14.2
     # via -r requirements/tox.in
 virtualenv==20.25.1
     # via tox
diff --git a/setup.py b/setup.py
index c6e7030..0ba094d 100644
--- a/setup.py
+++ b/setup.py
@@ -78,5 +78,6 @@ def get_version(*file_paths):
         'Natural Language :: English',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.11',
     ],
 )
diff --git a/tests/test_calc.py b/tests/test_calc.py
index bb980b4..b43d423 100644
--- a/tests/test_calc.py
+++ b/tests/test_calc.py
@@ -348,9 +348,13 @@ def test_other_functions(self):
         self.assert_function_values('factorial', fact_inputs, fact_values)
 
         self.assertRaises(ValueError, calc.evaluator, {}, {}, "fact(-1)")
-        self.assertRaises(ValueError, calc.evaluator, {}, {}, "fact(0.5)")
+        # There are 2 errors below because py3.8 raises ValueError and 3.11 raises TypeError
+        # Value error to be removed when we remove py3.8 support
+        self.assertRaises((TypeError, ValueError), calc.evaluator, {}, {}, "fact(0.5)")
         self.assertRaises(ValueError, calc.evaluator, {}, {}, "factorial(-1)")
-        self.assertRaises(ValueError, calc.evaluator, {}, {}, "factorial(0.5)")
+        # There are 2 errors below because py3.8 raises ValueError and 3.11 raises TypeError
+        # Value error to be removed when we remove py3.8 support
+        self.assertRaises((TypeError, ValueError), calc.evaluator, {}, {}, "factorial(0.5)")
 
     def test_constants(self):
         """
diff --git a/tox.ini b/tox.ini
index 4e25818..3d77849 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,11 @@
 [tox]
-envlist = py38,quality
+envlist = py{38,311},quality
 
 [testenv]
 allowlist_externals =
 	touch
 deps =
+    setuptools
 	-r requirements/test.txt
 commands =
 	coverage run setup.py test
@@ -12,6 +13,7 @@ commands =
 
 [testenv:quality]
 deps =
+    setuptools
 	-r requirements/test.txt
 commands =
 	pycodestyle calc symmath tests