diff --git a/.gitignore b/.gitignore
index 6052736..902cffe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,5 +11,3 @@
 /xmlada-22.0.0.tar.gz
 /xmlada-23.0.0.tar.gz
 /xmlada-24.0.0.tar.gz
-/xmlada-25.0.0.tar.gz
-/xmlada-26.0.0.tar.gz
diff --git a/sources b/sources
index 313a9f1..3c545d4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (xmlada-26.0.0.tar.gz) = b97f7727df52229f8e76ab169f4b42b9b82b20c82555607d65455f6cb7836c83219017a45b832de38b348e595f5a68d0987e3c568293b45fc285ffdc3ec3aa01
+SHA512 (xmlada-24.0.0.tar.gz) = 4e6773a5fdf9b6ebb5afca913d77aba9f697768f28ef9b23b9277aa4ea4ce09de4e53655dd5559e2326ff847327adb53fa6b776775aa923100a2624df415c97d
\ No newline at end of file
diff --git a/xmlada.spec b/xmlada.spec
index bb65e7e..e2f3bdd 100644
--- a/xmlada.spec
+++ b/xmlada.spec
@@ -6,13 +6,13 @@
 # Upstream source information.
 %global upstream_owner    AdaCore
 %global upstream_name     xmlada
-%global upstream_version  26.0.0
-%global upstream_commit   5e5b761eb827f458efd2043a5e9ab03e1a614720
+%global upstream_version  24.0.0
+%global upstream_gittag   v%{upstream_version}
 
 Name:           xmlada
 Epoch:          2
 Version:        %{upstream_version}
-Release:        5%{?dist}
+Release:        1%{?dist}
 Summary:        XML library for Ada
 
 License:        GPL-3.0-or-later WITH GCC-exception-3.1 AND Unicode-DFS-2016
@@ -21,7 +21,7 @@ License:        GPL-3.0-or-later WITH GCC-exception-3.1 AND Unicode-DFS-2016
 # generating some of XML/Ada's source code.
 
 URL:            https://github.com/%{upstream_owner}/%{upstream_name}
-Source0:        %{url}/archive/%{upstream_commit}.tar.gz#/%{upstream_name}-%{upstream_version}.tar.gz
+Source0:        %{url}/archive/%{upstream_gittag}/%{upstream_name}-%{upstream_version}.tar.gz
 
 # XML/Ada's aggregate project file. This project file is normally generated and
 # installed by GPRinstall, but as we'll install each XML/Ada component
@@ -31,12 +31,12 @@ Source1:        xmlada.gpr
 BuildRequires:  make
 %if %{without bootstrap}
 BuildRequires:  gcc-gnat gprbuild sed
-BuildRequires:  fedora-gnat-project-common
+# A fedora-gnat-project-common that contains the macro GPRinstall is needed.
+BuildRequires:  fedora-gnat-project-common >= 3.21
 BuildRequires:  python3-sphinx
-BuildRequires:  python3-sphinx-latex
 BuildRequires:  python3-sphinx_rtd_theme
-%else
-BuildRequires:  findutils
+BuildRequires:  python3-sphinx-latex
+BuildRequires:  latexmk
 %endif
 
 # Build only on architectures where GPRbuild is available.
@@ -88,10 +88,6 @@ BuildArch:      noarch
 License:        AdaCore-doc AND MIT AND BSD-2-Clause
 # License for the documentation is AdaCore-doc. The Javascript and CSS files
 # that Sphinx includes with the documentation are BSD 2-Clause and MIT-licensed.
-Requires:       font(fontawesome)
-Requires:       font(lato)
-Requires:       font(robotoslab)
-# Fonts are required by the Read the Docs Sphinx theme.
 
 %description doc %{common_description_en}
 
@@ -121,7 +117,7 @@ on which GPRbuild is not yet available.
 #############
 
 %prep
-%autosetup -C -p1
+%autosetup -p1
 
 # Set version number.
 sed --in-place --expression 's/18.0w/%{version}/' configure configure.in
@@ -279,45 +275,6 @@ find %{buildroot}%{_includedir}/%{name}/sources -type d -empty -delete
 ###############
 
 %changelog
-* Fri Jul 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 2:26.0.0-5
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild
-
-* Sun May 10 2026 Björn Persson <Bjorn@Rombobjörn.se> - 2:26.0.0-4
-- Rebuilt because GCC broke ALI again.
-
-* Sat Mar 28 2026 Björn Persson <Bjorn@Rombobjörn.se> - 2:26.0.0-3
-- Rebuilt because GCC 16.0.1-0.10 broke ALI.
-
-* Sat Jan 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 2:26.0.0-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild
-
-* Tue Dec 23 2025 Dennis van Raaij <dvraaij@fedoraproject.org> - 2:26.0.0-1
-- Updated to v26.0.0.
-
-* Fri Aug 08 2025 Björn Persson <Bjorn@Rombobjörn.se> - 2:25.0.0-7
-- Rebuilt because the ALI of System.OS_Constants changed.
-
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 2:25.0.0-6
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Sun Jan 19 2025 Fedora Release Engineering <releng@fedoraproject.org> - 2:25.0.0-5
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Wed Jan 15 2025 Björn Persson <Bjorn@Rombobjörn.se> - 2:25.0.0-4
-- Rebuilt with another GCC 15 prerelease.
-
-* Mon Jan 13 2025 Björn Persson <Bjorn@Rombobjörn.se> - 2:25.0.0-3
-- Rebuilt with GCC 15 prerelease.
-
-* Wed Dec 04 2024 Pavel Zhukov <landgraf@fedoraproject.org> - 2:25.0.0-2
-- Disable bootstrap
-
-* Sun Oct 27 2024 Dennis van Raaij <dvraaij@fedoraproject.org> - 2:25.0.0-1
-- Updated to v25.0.0.
-
-* Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2:24.0.0-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
-
 * Sun Jan 28 2024 Dennis van Raaij <dvraaij@fedoraproject.org> - 2:24.0.0-1
 - Updated to v24.0.0.
 - Generated HTML-documentation now uses the 'Read the Docs' Sphinx theme.