diff --git a/groovy18.changes b/groovy18.changes
index a5a54c1..c8d3a0e 100644
--- a/groovy18.changes
+++ b/groovy18.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Feb 20 14:34:44 UTC 2024 - Fridrich Strba <fstrba@suse.com>
+
+- Use %patch -P N instead of deprecated %patchN.
+
 -------------------------------------------------------------------
 Tue Sep 26 18:10:22 UTC 2023 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/groovy18.spec b/groovy18.spec
index 4153875..283ab6e 100644
--- a/groovy18.spec
+++ b/groovy18.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package groovy18
 #
-# Copyright (c) 2023 SUSE LLC
+# Copyright (c) 2024 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -129,22 +129,22 @@ find . -name "*.jar" -delete
 
 cp %{SOURCE3} .
 
-%patch0 -p1
-%patch1 -p1
-%patch2 -p1
-%patch3 -p1
-%patch4 -p1
-%patch5 -p1
-%patch6 -p1
-%patch7 -p1
-%patch8 -p1
-%patch9 -p1
-%patch10 -p1
-%patch11 -p1
-%patch12 -p1
-%patch13 -p1
-%patch14 -p1
-%patch15 -p1
+%patch -P 0 -p1
+%patch -P 1 -p1
+%patch -P 2 -p1
+%patch -P 3 -p1
+%patch -P 4 -p1
+%patch -P 5 -p1
+%patch -P 6 -p1
+%patch -P 7 -p1
+%patch -P 8 -p1
+%patch -P 9 -p1
+%patch -P 10 -p1
+%patch -P 11 -p1
+%patch -P 12 -p1
+%patch -P 13 -p1
+%patch -P 14 -p1
+%patch -P 15 -p1
 
 # build.xml is not compatible with Ant 1.10+
 sed -i "s| depends=\"-excludeLegacyAntVersion\"||" build.xml