diff --git a/opensm.changes b/opensm.changes
index 3950bde..a2a0228 100644
--- a/opensm.changes
+++ b/opensm.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Feb 26 12:49:28 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Use %autosetup macro. Allows to eliminate the usage of deprecated
+  PatchN.
+
 -------------------------------------------------------------------
 Tue Jan 11 13:21:31 UTC 2022 - Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>
 
diff --git a/opensm.spec b/opensm.spec
index 32222cf..ed57e02 100644
--- a/opensm.spec
+++ b/opensm.spec
@@ -93,8 +93,7 @@ Requires:       libosmvendor%{lib_osmvendor_major} = %{version}
 Symlinks for the dynamic libraries and header files for OpenSM.
 
 %prep
-%setup -q -n  %{name}-%{version}%{git_ver}
-%patch1
+%autosetup -p0 -n  %{name}-%{version}%{git_ver}
 
 cp %{S:1} %{S:2} %{S:3} .
 FAKE_BUILDDATE=$(LC_ALL=C date -u -r %{_sourcedir}/%{name}.changes '+%%b %%e %%Y')