diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 09361f4..78d23c7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,10 +3,10 @@ name: Python CI
 on:
   push:
     branches:
-      - master
+    - master
   pull_request:
     branches:
-      - '**'
+    - '**'
 
 jobs:
   run_tests:
@@ -14,9 +14,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-20.04 ]
-        python-version: [ 3.8 ]
-        toxenv: [ py38, quality ]
+        os: [ubuntu-20.04]
+        python-version: ['3.8', '3.11']
+        toxenv: [py38, quality, django42]
 
     steps:
     - uses: actions/checkout@v2
diff --git a/calc/calc.py b/calc/calc.py
index bee9310..92fdeab 100644
--- a/calc/calc.py
+++ b/calc/calc.py
@@ -265,6 +265,11 @@ def eval_variable(x):
         return all_variables[casify(x[0])]
 
     def eval_function(x):
+        # This logic here is only for factorial function
+        if isinstance(x[1], numbers.Real):
+            if math.ceil(x[1]) == x[1]:
+                return all_functions[casify(x[0])](int(x[1]))
+
         return all_functions[casify(x[0])](x[1])
 
     evaluate_actions = {
diff --git a/requirements/base.txt b/requirements/base.txt
index 677cc0e..7e701cb 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -1,22 +1,22 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    make upgrade
 #
-lxml==4.9.1
+lxml==5.1.0
     # via -r requirements/base.in
-markupsafe==2.1.1
+markupsafe==2.1.5
     # via -r requirements/base.in
-mpmath==1.2.1
+mpmath==1.3.0
     # via sympy
-numpy==1.23.1
+numpy==1.26.4
     # via
     #   -r requirements/base.in
     #   scipy
-pyparsing==3.0.9
+pyparsing==3.1.2
     # via -r requirements/base.in
-scipy==1.8.1
+scipy==1.12.0
     # via -r requirements/base.in
-sympy==1.10.1
+sympy==1.12
     # via -r requirements/base.in
diff --git a/requirements/ci.txt b/requirements/ci.txt
index 555ff58..c32c5e4 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -1,66 +1,67 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    make upgrade
 #
-certifi==2022.6.15
+cachetools==5.3.3
+    # via
+    #   -r requirements/tox.txt
+    #   tox
+certifi==2024.2.2
     # via requests
-charset-normalizer==2.1.0
+chardet==5.2.0
+    # via
+    #   -r requirements/tox.txt
+    #   tox
+charset-normalizer==3.3.2
     # via requests
-coverage==6.4.2
+colorama==0.4.6
+    # via
+    #   -r requirements/tox.txt
+    #   tox
+coverage==6.5.0
     # via coveralls
 coveralls==3.3.1
     # via -r requirements/ci.in
-distlib==0.3.5
+distlib==0.3.8
     # via
     #   -r requirements/tox.txt
     #   virtualenv
 docopt==0.6.2
     # via coveralls
-filelock==3.7.1
+filelock==3.13.1
     # via
     #   -r requirements/tox.txt
     #   tox
     #   virtualenv
-idna==3.3
+idna==3.6
     # via requests
-packaging==21.3
+packaging==24.0
     # via
     #   -r requirements/tox.txt
+    #   pyproject-api
     #   tox
-platformdirs==2.5.2
+platformdirs==4.2.0
     # via
     #   -r requirements/tox.txt
+    #   tox
     #   virtualenv
-pluggy==1.0.0
+pluggy==1.4.0
     # via
     #   -r requirements/tox.txt
     #   tox
-py==1.11.0
+pyproject-api==1.6.1
     # via
     #   -r requirements/tox.txt
     #   tox
-pyparsing==3.0.9
-    # via
-    #   -r requirements/tox.txt
-    #   packaging
-requests==2.28.1
+requests==2.31.0
     # via coveralls
-six==1.16.0
-    # via
-    #   -r requirements/tox.txt
-    #   tox
-    #   virtualenv
-toml==0.10.2
-    # via
-    #   -r requirements/tox.txt
-    #   tox
-tox==3.25.1
+tox==4.14.2
     # via -r requirements/tox.txt
-urllib3==1.26.10
+urllib3==2.2.1
     # via requests
-virtualenv==20.15.1
+virtualenv==20.25.1
     # via
     #   -r requirements/tox.txt
     #   tox
diff --git a/requirements/common_constraints.txt b/requirements/common_constraints.txt
index cca3ccd..e3bf8ea 100644
--- a/requirements/common_constraints.txt
+++ b/requirements/common_constraints.txt
@@ -13,13 +13,20 @@
 
 
 # using LTS django version
-Django<4.0
+Django<5.0
 
 # elasticsearch>=7.14.0 includes breaking changes in it which caused issues in discovery upgrade process.
 # elastic search changelog: https://www.elastic.co/guide/en/enterprise-search/master/release-notes-7.14.0.html
 elasticsearch<7.14.0
 
-setuptools<60
-
 # django-simple-history>3.0.0 adds indexing and causes a lot of migrations to be affected
 django-simple-history==3.0.0
+
+# opentelemetry requires version 6.x at the moment:
+# https://github.com/open-telemetry/opentelemetry-python/issues/3570
+# Normally this could be added as a constraint in edx-django-utils, where we're
+# adding the opentelemetry dependency. However, when we compile pip-tools.txt,
+# that uses version 7.x, and then there's no undoing that when compiling base.txt.
+# So we need to pin it globally, for now.
+# Ticket for unpinning: https://github.com/openedx/edx-lint/issues/407
+importlib-metadata<7
diff --git a/requirements/pip.txt b/requirements/pip.txt
index 0495eb8..218ba66 100644
--- a/requirements/pip.txt
+++ b/requirements/pip.txt
@@ -1,16 +1,14 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    make upgrade
 #
-wheel==0.37.1
+wheel==0.43.0
     # via -r requirements/pip.in
 
 # The following packages are considered to be unsafe in a requirements file:
-pip==22.2
+pip==24.0
+    # via -r requirements/pip.in
+setuptools==69.2.0
     # via -r requirements/pip.in
-setuptools==59.8.0
-    # via
-    #   -c requirements/common_constraints.txt
-    #   -r requirements/pip.in
diff --git a/requirements/pip_tools.txt b/requirements/pip_tools.txt
index 32b8de6..14de3e4 100644
--- a/requirements/pip_tools.txt
+++ b/requirements/pip_tools.txt
@@ -1,26 +1,22 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    make upgrade
 #
-build==0.8.0
+build==1.1.1
     # via pip-tools
-click==8.1.3
+click==8.1.7
     # via pip-tools
-packaging==21.3
+packaging==24.0
     # via build
-pep517==0.12.0
-    # via build
-pip-tools==6.8.0
+pip-tools==7.4.1
     # via -r requirements/pip_tools.in
-pyparsing==3.0.9
-    # via packaging
-tomli==2.0.1
+pyproject-hooks==1.0.0
     # via
     #   build
-    #   pep517
-wheel==0.37.1
+    #   pip-tools
+wheel==0.43.0
     # via pip-tools
 
 # The following packages are considered to be unsafe in a requirements file:
diff --git a/requirements/test.txt b/requirements/test.txt
index 95b7406..cb7a455 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -1,71 +1,76 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    make upgrade
 #
-astroid==2.11.7
+astroid==3.1.0
     # via
     #   pylint
     #   pylint-celery
-click==8.1.3
+cachetools==5.3.3
+    # via tox
+chardet==5.2.0
+    # via tox
+click==8.1.7
     # via
     #   click-log
     #   code-annotations
     #   edx-lint
 click-log==0.4.0
     # via edx-lint
-code-annotations==1.3.0
+code-annotations==1.7.0
     # via edx-lint
-coverage==6.4.2
+colorama==0.4.6
+    # via tox
+coverage==7.4.4
     # via -r requirements/test.in
-dill==0.3.5.1
+dill==0.3.8
     # via pylint
-distlib==0.3.5
+distlib==0.3.8
     # via virtualenv
-edx-lint==5.2.4
+edx-lint==5.3.6
     # via -r requirements/test.in
-filelock==3.7.1
+filelock==3.13.1
     # via
     #   tox
     #   virtualenv
-isort==5.10.1
+isort==5.13.2
     # via pylint
-jinja2==3.1.2
+jinja2==3.1.3
     # via code-annotations
-lazy-object-proxy==1.7.1
-    # via astroid
-lxml==4.9.1
+lxml==5.1.0
     # via -r requirements/base.txt
-markupsafe==2.1.1
+markupsafe==2.1.5
     # via
     #   -r requirements/base.txt
     #   jinja2
 mccabe==0.7.0
     # via pylint
-mpmath==1.2.1
+mpmath==1.3.0
     # via
     #   -r requirements/base.txt
     #   sympy
-numpy==1.23.1
+numpy==1.26.4
     # via
     #   -r requirements/base.txt
     #   scipy
-packaging==21.3
-    # via tox
-pbr==5.9.0
+packaging==24.0
+    # via
+    #   pyproject-api
+    #   tox
+pbr==6.0.0
     # via stevedore
-platformdirs==2.5.2
+platformdirs==4.2.0
     # via
     #   pylint
+    #   tox
     #   virtualenv
-pluggy==1.0.0
-    # via tox
-py==1.11.0
+pluggy==1.4.0
     # via tox
-pycodestyle==2.8.0
+pycodestyle==2.11.1
     # via -r requirements/test.in
-pylint==2.14.5
+pylint==3.1.0
     # via
     #   -r requirements/test.in
     #   edx-lint
@@ -74,49 +79,33 @@ pylint==2.14.5
     #   pylint-plugin-utils
 pylint-celery==0.3
     # via edx-lint
-pylint-django==2.5.3
+pylint-django==2.5.5
     # via edx-lint
-pylint-plugin-utils==0.7
+pylint-plugin-utils==0.8.2
     # via
     #   pylint-celery
     #   pylint-django
-pyparsing==3.0.9
-    # via
-    #   -r requirements/base.txt
-    #   packaging
-python-slugify==6.1.2
+pyparsing==3.1.2
+    # via -r requirements/base.txt
+pyproject-api==1.6.1
+    # via tox
+python-slugify==8.0.4
     # via code-annotations
-pyyaml==6.0
+pyyaml==6.0.1
     # via code-annotations
-scipy==1.8.1
+scipy==1.12.0
     # via -r requirements/base.txt
 six==1.16.0
-    # via
-    #   edx-lint
-    #   tox
-    #   virtualenv
-stevedore==4.0.0
+    # via edx-lint
+stevedore==5.2.0
     # via code-annotations
-sympy==1.10.1
+sympy==1.12
     # via -r requirements/base.txt
 text-unidecode==1.3
     # via python-slugify
-toml==0.10.2
-    # via tox
-tomli==2.0.1
-    # via pylint
-tomlkit==0.11.1
+tomlkit==0.12.4
     # via pylint
-tox==3.25.1
+tox==4.14.2
     # via -r requirements/test.in
-typing-extensions==4.3.0
-    # via
-    #   astroid
-    #   pylint
-virtualenv==20.15.1
+virtualenv==20.25.1
     # via tox
-wrapt==1.14.1
-    # via astroid
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools
diff --git a/requirements/tox.txt b/requirements/tox.txt
index 66512a3..8ccf9db 100644
--- a/requirements/tox.txt
+++ b/requirements/tox.txt
@@ -1,32 +1,34 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    make upgrade
 #
-distlib==0.3.5
+cachetools==5.3.3
+    # via tox
+chardet==5.2.0
+    # via tox
+colorama==0.4.6
+    # via tox
+distlib==0.3.8
     # via virtualenv
-filelock==3.7.1
+filelock==3.13.1
     # via
     #   tox
     #   virtualenv
-packaging==21.3
-    # via tox
-platformdirs==2.5.2
-    # via virtualenv
-pluggy==1.0.0
-    # via tox
-py==1.11.0
-    # via tox
-pyparsing==3.0.9
-    # via packaging
-six==1.16.0
+packaging==24.0
+    # via
+    #   pyproject-api
+    #   tox
+platformdirs==4.2.0
     # via
     #   tox
     #   virtualenv
-toml==0.10.2
+pluggy==1.4.0
+    # via tox
+pyproject-api==1.6.1
     # via tox
-tox==3.25.1
+tox==4.14.2
     # via -r requirements/tox.in
-virtualenv==20.15.1
+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..47f3202 100644
--- a/tests/test_calc.py
+++ b/tests/test_calc.py
@@ -348,9 +348,9 @@ 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)")
+        self.assertRaises(TypeError, calc.evaluator, {}, {}, "fact(0.5)")
         self.assertRaises(ValueError, calc.evaluator, {}, {}, "factorial(-1)")
-        self.assertRaises(ValueError, calc.evaluator, {}, {}, "factorial(0.5)")
+        self.assertRaises(TypeError, calc.evaluator, {}, {}, "factorial(0.5)")
 
     def test_constants(self):
         """
diff --git a/tox.ini b/tox.ini
index 4e25818..5684354 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,18 +1,19 @@
 [tox]
-envlist = py38,quality
+envlist = py{38, 311}quality
 
 [testenv]
-allowlist_externals =
-	touch
-deps =
-	-r requirements/test.txt
-commands =
-	coverage run setup.py test
-	coverage report
+allowlist_externals = 
+    touch
+deps = 
+    -r requirements/test.txt
+commands = 
+    coverage run setup.py test
+    coverage report
 
 [testenv:quality]
-deps =
-	-r requirements/test.txt
-commands =
-	pycodestyle calc symmath tests
-	pylint calc symmath tests
+deps = 
+    -r requirements/test.txt
+commands = 
+    pycodestyle calc symmath tests
+    pylint calc symmath tests
+