diff --git a/docs/api/index.rst b/docs/api/index.rst
index c6b4cfa8..86389688 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -2,7 +2,7 @@ API Documentation
 =================
 
 ..  toctree::
-    :maxdepth: 2
+   :maxdepth: 2
 
    top-level
    providers
diff --git a/docs/conf.py b/docs/conf.py
index 380da2da..4de57da7 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -72,7 +72,7 @@ release = version
 #
 # 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"
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
diff --git a/docs/introduction/key_features.rst b/docs/introduction/key_features.rst
index 0870ac11..1975e8fc 100644
--- a/docs/introduction/key_features.rst
+++ b/docs/introduction/key_features.rst
@@ -31,7 +31,7 @@ Key features of the ``Dependency Injector``:
 
 The framework stands on the `PEP20 (The Zen of Python) <https://www.python.org/dev/peps/pep-0020/>`_ principle:
 
-.. code-block:: plain
+.. code-block:: text
 
    Explicit is better than implicit
 
diff --git a/docs/tutorials/aiohttp.rst b/docs/tutorials/aiohttp.rst
index 57b1c959..10b33b49 100644
--- a/docs/tutorials/aiohttp.rst
+++ b/docs/tutorials/aiohttp.rst
@@ -257,7 +257,7 @@ Let's check that it works. Open another terminal session and use ``httpie``:
 
 You should see:
 
-.. code-block:: json
+.. code-block:: http
 
    HTTP/1.1 200 OK
    Content-Length: 844
@@ -596,7 +596,7 @@ and make a request to the API in the terminal:
 
 You should see:
 
-.. code-block:: json
+.. code-block:: http
 
    HTTP/1.1 200 OK
    Content-Length: 492
diff --git a/docs/tutorials/cli.rst b/docs/tutorials/cli.rst
index 88014ff3..ea3c8467 100644
--- a/docs/tutorials/cli.rst
+++ b/docs/tutorials/cli.rst
@@ -84,7 +84,7 @@ Create next structure in the project root directory. All files are empty. That's
 
 Initial project layout:
 
-.. code-block:: bash
+.. code-block:: text
 
    ./
    ├── movies/
@@ -109,7 +109,7 @@ Now it's time to install the project requirements. We will use next packages:
 
 Put next lines into the ``requirements.txt`` file:
 
-.. code-block:: bash
+.. code-block:: text
 
    dependency-injector
    pyyaml
@@ -134,7 +134,7 @@ We will create a script that creates database files.
 First add the folder ``data/`` in the root of the project and then add the file
 ``fixtures.py`` inside of it:
 
-.. code-block:: bash
+.. code-block:: text
    :emphasize-lines: 2-3
 
    ./
@@ -205,13 +205,13 @@ Now run in the terminal:
 
 You should see:
 
-.. code-block:: bash
+.. code-block:: text
 
    OK
 
 Check that files ``movies.csv`` and ``movies.db`` have appeared in the ``data/`` folder:
 
-.. code-block:: bash
+.. code-block:: text
    :emphasize-lines: 4-5
 
    ./
@@ -289,7 +289,7 @@ After each step we will add the provider to the container.
 
 Create the ``entities.py`` in the ``movies`` package:
 
-.. code-block:: bash
+.. code-block:: text
    :emphasize-lines: 10
 
    ./
@@ -356,7 +356,7 @@ Let's move on to the finders.
 
 Create the ``finders.py`` in the ``movies`` package:
 
-.. code-block:: bash
+.. code-block:: text
    :emphasize-lines: 11
 
    ./
@@ -465,7 +465,7 @@ The configuration file is ready. Move on to the lister.
 
 Create the ``listers.py`` in the ``movies`` package:
 
-.. code-block:: bash
+.. code-block:: text
    :emphasize-lines: 12
 
    ./
@@ -613,7 +613,7 @@ Run in the terminal:
 
 You should see:
 
-.. code-block:: plain
+.. code-block:: text
 
    Francis Lawrence movies:
        - Movie(title='The Hunger Games: Mockingjay - Part 2', year=2015, director='Francis Lawrence')
@@ -752,7 +752,7 @@ Run in the terminal:
 
 You should see:
 
-.. code-block:: plain
+.. code-block:: text
 
    Francis Lawrence movies:
        - Movie(title='The Hunger Games: Mockingjay - Part 2', year=2015, director='Francis Lawrence')
@@ -868,7 +868,7 @@ Run in the terminal line by line:
 
 The output should be similar for each command:
 
-.. code-block:: plain
+.. code-block:: text
 
    Francis Lawrence movies:
        - Movie(title='The Hunger Games: Mockingjay - Part 2', year=2015, director='Francis Lawrence')
@@ -888,7 +888,7 @@ We will use `pytest <https://docs.pytest.org/en/stable/>`_ and
 
 Create ``tests.py`` in the ``movies`` package:
 
-.. code-block:: bash
+.. code-block:: text
    :emphasize-lines: 13
 
    ./
@@ -977,7 +977,7 @@ Run in the terminal:
 
 You should see:
 
-.. code-block::
+.. code-block:: text
 
    platform darwin -- Python 3.10.0, pytest-6.2.5, py-1.10.0, pluggy-1.0.0
    plugins: cov-3.0.0
diff --git a/docs/tutorials/flask.rst b/docs/tutorials/flask.rst
index 8c22aa5a..b8f81adf 100644
--- a/docs/tutorials/flask.rst
+++ b/docs/tutorials/flask.rst
@@ -280,7 +280,7 @@ Now let's fill in the layout.
 
 Put next into the ``base.html``:
 
-.. code-block:: html
+.. code-block:: jinja
 
    <!doctype html>
    <html lang="en">
@@ -313,7 +313,7 @@ And put something to the index page.
 
 Put next into the ``index.html``:
 
-.. code-block:: html
+.. code-block:: jinja
 
    {% extends "base.html" %}
 
diff --git a/docs/wiring.rst b/docs/wiring.rst
index 456f1e89..912b320e 100644
--- a/docs/wiring.rst
+++ b/docs/wiring.rst
@@ -127,6 +127,7 @@ To inject the provider itself use ``Provide[foo.provider]``:
    def foo(bar_provider: Factory[Bar] = Provide[Container.bar.provider]):
        bar = bar_provider(argument="baz")
        ...
+
 You can also use ``Provider[foo]`` for injecting the provider itself:
 
 .. code-block:: python