diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 7a797984..1ad0c346 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -7,33 +7,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.8', '3.9', '3.10', '3.11']
         sphinx-version:
-          - '4.0.3'
-          - '4.1.2'
-          - '4.2.0'
-          - '4.3.2'
-          - '4.5.0'
           - '5.0.2'
           - '5.1.1'
+          - '5.2.3'
           - '5.3.0'
           - '6.1.3'
           - git+https://github.com/sphinx-doc/sphinx.git@master
-        exclude:
-          # avoid bug in following configurations
-          # sphinx/util/typing.py:37: in <module>
-          #     from types import Union as types_Union
-          # ImportError: cannot import name 'Union' from 'types'
-          - python-version: '3.10'
-            sphinx-version: '4.0.3'
-          - python-version: '3.10'
-            sphinx-version: '4.1.2'
-
-          # Sphinx has removed support for Python 3.7, Breathe will follow.
-          - python-version: '3.7'
-            sphinx-version: git+https://github.com/sphinx-doc/sphinx.git@master
-          - python-version: '3.7'
-            sphinx-version: '6.1.3'
 
     steps:
       - uses: actions/checkout@v2
diff --git a/README.rst b/README.rst
index bfc11d78..cbf01022 100644
--- a/README.rst
+++ b/README.rst
@@ -98,7 +98,7 @@ branch.
 Requirements
 ------------
 
-Breathe requires Python 3.6+, Sphinx 4.0+ and Doxygen 1.8+.
+Breathe requires Python 3.8+, Sphinx 5.0+ and Doxygen 1.8+.
 
 Mailing List Archives
 ---------------------
diff --git a/setup.py b/setup.py
index 1ca127eb..3a94b358 100644
--- a/setup.py
+++ b/setup.py
@@ -19,8 +19,8 @@
 
 requires = ["Sphinx>=4.0,!=5.0.0", "docutils>=0.12"]
 
-if sys.version_info < (3, 7):
-    print("ERROR: Sphinx requires at least Python 3.7 to run.")
+if sys.version_info < (3, 8):
+    print("ERROR: Sphinx requires at least Python 3.8 to run.")
     sys.exit(1)