diff --git a/Documentation/conf.py b/Documentation/conf.py
index 20bd74edcca9..3a1a804c3a13 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -47,7 +47,7 @@ from load_config import loadConfig
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-needs_sphinx = '1.7'
+needs_sphinx = '2.4.4'
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
diff --git a/Documentation/doc-guide/sphinx.rst b/Documentation/doc-guide/sphinx.rst
index bb7971643fcf..3d125fb4139d 100644
--- a/Documentation/doc-guide/sphinx.rst
+++ b/Documentation/doc-guide/sphinx.rst
@@ -28,7 +28,7 @@ Sphinx Install
 ==============
 
 The ReST markups currently used by the Documentation/ files are meant to be
-built with ``Sphinx`` version 1.7 or higher.
+built with ``Sphinx`` version 2.4.4 or higher.
 
 There's a script that checks for the Sphinx requirements. Please see
 :ref:`sphinx-pre-install` for further details.
diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index bb96ca0f774b..559587a89974 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -58,7 +58,7 @@ mcelog                 0.6              mcelog --version
 iptables               1.4.2            iptables -V
 openssl & libcrypto    1.0.0            openssl version
 bc                     1.06.95          bc --version
-Sphinx\ [#f1]_         1.7              sphinx-build --version
+Sphinx\ [#f1]_         2.4.4            sphinx-build --version
 cpio                   any              cpio --version
 GNU tar                1.28             tar --version
 gtags (optional)       6.6.5            gtags --version
diff --git a/Documentation/sphinx/automarkup.py b/Documentation/sphinx/automarkup.py
index acc6d55718bd..a413f8dd5115 100644
--- a/Documentation/sphinx/automarkup.py
+++ b/Documentation/sphinx/automarkup.py
@@ -7,11 +7,7 @@
 from docutils import nodes
 import sphinx
 from sphinx import addnodes
-if sphinx.version_info[0] < 2 or \
-   sphinx.version_info[0] == 2 and sphinx.version_info[1] < 1:
-    from sphinx.environment import NoUri
-else:
-    from sphinx.errors import NoUri
+from sphinx.errors import NoUri
 import re
 from itertools import chain
 
diff --git a/Documentation/sphinx/cdomain.py b/Documentation/sphinx/cdomain.py
index 4eb150bf509c..e6959af25402 100644
--- a/Documentation/sphinx/cdomain.py
+++ b/Documentation/sphinx/cdomain.py
@@ -127,11 +127,7 @@ def setup(app):
 
     # Handle easy Sphinx 3.1+ simple new tags: :c:expr and .. c:namespace::
     app.connect('source-read', c_markups)
-
-    if (major == 1 and minor < 8):
-        app.override_domain(CDomain)
-    else:
-        app.add_domain(CDomain, override=True)
+    app.add_domain(CDomain, override=True)
 
     return dict(
         version = __version__,
diff --git a/Documentation/sphinx/kfigure.py b/Documentation/sphinx/kfigure.py
index 13e885bbd499..97166333b727 100644
--- a/Documentation/sphinx/kfigure.py
+++ b/Documentation/sphinx/kfigure.py
@@ -61,13 +61,7 @@ import sphinx
 from sphinx.util.nodes import clean_astext
 import kernellog
 
-# Get Sphinx version
-major, minor, patch = sphinx.version_info[:3]
-if major == 1 and minor > 3:
-    # patches.Figure only landed in Sphinx 1.4
-    from sphinx.directives.patches import Figure  # pylint: disable=C0413
-else:
-    Figure = images.Figure
+Figure = images.Figure
 
 __version__  = '1.0.0'
 
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index 1fb88fdceec3..25aefbb35377 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -32,8 +32,7 @@ my $python_cmd = "";
 my $activate_cmd;
 my $min_version;
 my $cur_version;
-my $rec_version = "1.7.9";	# PDF won't build here
-my $min_pdf_version = "2.4.4";	# Min version where pdf builds
+my $rec_version = "3.4.3";
 my $latest_avail_ver;
 
 #
@@ -791,9 +790,6 @@ sub recommend_sphinx_version($)
 
 	# Version is OK. Nothing to do.
 	if ($cur_version && ($cur_version ge $rec_version)) {
-		if ($cur_version lt $min_pdf_version) {
-			print "note: If you want pdf, you need at least Sphinx $min_pdf_version.\n";
-		}
 		return;
 	};
 
@@ -842,10 +838,6 @@ sub recommend_sphinx_version($)
 			printf "\t. $activate_cmd\n";
 			deactivate_help();
 
-			if ($latest_avail_ver lt $min_pdf_version) {
-				print "note: If you want pdf, you need at least Sphinx $min_pdf_version.\n";
-			}
-
 			return;
 		}