diff --git a/cppreference-doc-premailer-3.9-compat.patch b/cppreference-doc-premailer-3.9-compat.patch
new file mode 100644
index 0000000..a44fed0
--- /dev/null
+++ b/cppreference-doc-premailer-3.9-compat.patch
@@ -0,0 +1,23 @@
+Index: cppreference-doc-20220730/commands/preprocess_cssless.py
+===================================================================
+--- cppreference-doc-20220730.orig/commands/preprocess_cssless.py
++++ cppreference-doc-20220730/commands/preprocess_cssless.py
+@@ -72,8 +72,16 @@ def preprocess_html_merge_css(root, src_
+ 
+     with warnings.catch_warnings():
+         warnings.simplefilter("ignore")
+-        premailer = Premailer(root, base_url=src_path,
+-                              disable_link_rewrites=True, remove_classes=True)
++        try:
++            # Premailer >= 3.9
++            premailer = Premailer(root, base_url=src_path,
++                                  disable_link_rewrites=True, remove_classes=True,
++                                  allow_loading_external_files=True)
++        except:
++            # Premailer < 3.9
++            premailer = Premailer(root, base_url=src_path,
++                                  disable_link_rewrites=True, remove_classes=True)
++
+         root = premailer.transform().getroot()
+ 
+     return output.getvalue()
diff --git a/cppreference-doc.changes b/cppreference-doc.changes
index df18f7c..6d16f9c 100644
--- a/cppreference-doc.changes
+++ b/cppreference-doc.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Oct 24 11:09:11 UTC 2022 - Atri Bhattacharya <badshah400@gmail.com>
+
+- Add cppreference-doc-premailer-3.9-compat.patch: Make
+  pre-processing compatible with premailer >= 3.9.
+
 -------------------------------------------------------------------
 Thu Sep 15 02:54:34 UTC 2022 - Atri Bhattacharya <badshah400@gmail.com>
 
diff --git a/cppreference-doc.spec b/cppreference-doc.spec
index eeee0f4..c073a79 100644
--- a/cppreference-doc.spec
+++ b/cppreference-doc.spec
@@ -24,6 +24,8 @@ License:        CC-BY-SA-3.0
 Group:          Documentation/HTML
 URL:            http://en.cppreference.com/w/
 Source0:        https://github.com/PeterFeicht/%{name}/releases/download/v%{version}/%{name}-%{version}.tar.xz
+# PATCH-FIX-UPSTREAM cppreference-doc-premailer-3.9-compat.patch badshah400@gmail.com -- Fix building against premailer >= 3.9
+Patch0:         cppreference-doc-premailer-3.9-compat.patch
 BuildRequires:  devhelp
 BuildRequires:  fdupes
 BuildRequires:  libqt5-qttools
@@ -62,7 +64,7 @@ Cppreference is a complete online reference for the C and C++ languages and stan
 This package provides the documentation in the qhelp format.
 
 %prep
-%setup -q
+%autosetup -p1
 
 %build
 make %{?_smp_mflags} qhelpgenerator=qhelpgenerator-qt5