diff --git a/docs/source/conf.py b/docs/source/conf.py
index 23eea56d8..d8551f42c 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -76,7 +76,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 # highlight_language = "python"
 
 # List of patterns, relative to source directory, that match files and
diff --git a/docs/source/deprecation.md b/docs/source/deprecation.md
index f6ede9d47..4d1ebe313 100644
--- a/docs/source/deprecation.md
+++ b/docs/source/deprecation.md
@@ -290,9 +290,8 @@ before the definition of the `produce_answer` function. But if we do the same
 for the test function, we will get an error (see that we have now just one
 deprecation warning now):
 
-```python
+```
 | 21:59:57 | conftest | INFO | conftest.py | Actor 'foo_producer' context teardown complete
-
 repos/system_upgrade/el7toel8/actors/fooproducer/tests/test_unit_fooproducer.py::test_process FAILED
 
 ====================================================== FAILURES ======================================================
diff --git a/docs/source/devenv-install.md b/docs/source/devenv-install.md
index 72f25909a..522b3d457 100644
--- a/docs/source/devenv-install.md
+++ b/docs/source/devenv-install.md
@@ -49,7 +49,7 @@ $ pip install git+https://github.com/oamg/leapp
 ```
 
 Once the framework is installed, you can use the snactor tool.
-```shell
+```
 $ snactor --help
 usage: snactor [-h] [--version] [--logger-config LOGGER_CONFIG]
                [--config CONFIG] [--verbose] [--debug]
@@ -65,7 +65,7 @@ Optional arguments:
   --debug               Enables debug mode
 
 Main commands:
-  
+
     new-tag             Create a new tag
     new-model           Creates a new model
     run                 Execute the given actor
diff --git a/requirements-docs.txt b/requirements-docs.txt
index 9540a5a0a..9f8263f9b 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -5,5 +5,5 @@ sphinxcontrib-jquery
 docutils
 CommonMark
 myst-parser
-sphinx==5.3.0
+sphinx==6.2.1
 sphinx-autobuild