diff --git a/sgmltool.changes b/sgmltool.changes
index 96c165a..09fa147 100644
--- a/sgmltool.changes
+++ b/sgmltool.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Feb 26 13:08:20 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Use %patch -P N instead of deprecated %patchN.
+
 -------------------------------------------------------------------
 Mon Sep 30 10:16:15 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/sgmltool.spec b/sgmltool.spec
index 3a94f86..1eac31e 100644
--- a/sgmltool.spec
+++ b/sgmltool.spec
@@ -80,16 +80,16 @@ This package contains the LaTeX generator (sgml2latex) from sgmltool.
 
 %prep
 %setup -q -n sgml-tools-%{version} -a1
-%patch0
-%patch1 -p1
-%patch2 -p1
-%patch3 -p1
-%patch4 -p1
-%patch5
-%patch6 -p1
-%patch7 -p1
-%patch8
-%patch9
+%patch -P 0
+%patch -P 1 -p1
+%patch -P 2 -p1
+%patch -P 3 -p1
+%patch -P 4 -p1
+%patch -P 5
+%patch -P 6 -p1
+%patch -P 7 -p1
+%patch -P 8
+%patch -P 9
 
 %build
 export CFLAGS="%{optflags} -fno-strict-aliasing"