diff --git a/scala-2.10.4-build_xml.patch b/scala-2.10.4-build_xml.patch
index 4649034..0cfa47b 100644
--- a/scala-2.10.4-build_xml.patch
+++ b/scala-2.10.4-build_xml.patch
@@ -55,7 +55,7 @@
    <property name="scalacheck.jar"          value="${lib.dir}/scalacheck.jar"/>
  
    <!-- Sets location of build folders -->
-@@ -181,91 +180,57 @@
+@@ -181,91 +180,54 @@
    </target>
  
    <target name="boot" depends="desired.jars.uptodate" unless="lib.jars.uptodate">
@@ -182,9 +182,6 @@
 +    <taskdef name="same"
 +             classpathref="scalabootstrap.classpath"
 +             classname="scala.tools.ant.Same"/>
-+    <taskdef name="pack200"
-+             classpathref="scalabootstrap.classpath"
-+             classname="scala.tools.ant.Pack200Task"/>
 +    
 +    <typedef resource="aQute/bnd/ant/taskdef.properties" 
 +	     classpath="/usr/share/java/aqute-bnd.jar" />
diff --git a/scala-2.10.7-jdk15.patch b/scala-2.10.7-jdk15.patch
new file mode 100644
index 0000000..f9e46c5
--- /dev/null
+++ b/scala-2.10.7-jdk15.patch
@@ -0,0 +1,27 @@
+--- scala-2.10.7/src/compiler/scala/tools/ant/antlib.xml	2023-09-28 18:35:06.147897841 +0200
++++ scala-2.10.7/src/compiler/scala/tools/ant/antlib.xml	2023-09-28 18:47:47.202949642 +0200
+@@ -13,6 +13,4 @@
+              classname="scala.tools.ant.ScalaTool"/>
+     <taskdef name="same"
+              classname="scala.tools.ant.Same"/>
+-    <taskdef name="pack200"
+-             classname="scala.tools.ant.Pack200Task"/>
+ </antlib>
+Only in scala-2.10.7/src/compiler/scala/tools/ant: Pack200Task.scala
+--- scala-2.10.7/src/library/scala/collection/mutable/StringBuilder.scala	2023-09-28 18:35:06.187898108 +0200
++++ scala-2.10.7/src/library/scala/collection/mutable/StringBuilder.scala	2023-09-28 18:49:06.536809546 +0200
+@@ -437,6 +437,14 @@
+    *  @return  the string assembled by this StringBuilder
+    */
+   def result(): String = toString
++
++  /** Tests whether this builder is empty.
++   *
++   *  This method is required for JDK15+ compatibility
++   *
++   *  @return  `true` if this builder contains nothing, `false` otherwise.
++   */
++  override def isEmpty: Boolean = underlying.length() == 0
+ }
+ 
+ object StringBuilder {
diff --git a/scala-2.10.7-source6.patch b/scala-2.10.7-source8.patch
similarity index 91%
rename from scala-2.10.7-source6.patch
rename to scala-2.10.7-source8.patch
index cb42a3e..7ac612f 100644
--- a/scala-2.10.7-source6.patch
+++ b/scala-2.10.7-source8.patch
@@ -7,7 +7,7 @@ Index: scala-2.10.7/build.xml
            classpath="${@{project}-classes}"
            includes="**/*.java"
 -          target="1.6" source="1.5"
-+          target="1.6" source="1.6"
++          target="1.8" source="1.8"
            compiler="javac1.6"
  	  includeantruntime="false" >
              <compilerarg line="${javac.args} @{args}"/>
@@ -16,7 +16,7 @@ Index: scala-2.10.7/build.xml
          excludes="@{excludes}"
  	includeantruntime="false"
 -        target="1.6" source="1.5">
-+        target="1.6" source="1.6">
++        target="1.8" source="1.8">
            <compilerarg line="${javac.args} @{args}"/>
            <classpath refid="@{stage}.@{destproject}.build.path"/>
        </javac>
diff --git a/scala.changes b/scala.changes
index d616040..8257aee 100644
--- a/scala.changes
+++ b/scala.changes
@@ -1,3 +1,18 @@
+-------------------------------------------------------------------
+Fri Sep 29 06:45:12 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Allow building with jdk >= 9 too
+- Added patch:
+  * scala-2.10.7-jdk15.patch
+    + do not build pack200 ant task since Pack200 was removed in
+      jdk15
+    + implement a new method added in jdk15
+- Modified patches:
+  * scala-2.10.4-build_xml.patch
+    + do not try to instantiate the pack200 ant task
+  * scala-2.10.7-source6.patch -> scala-2.10.7-source8.patch
+    + build with source/target 8 levels
+
 -------------------------------------------------------------------
 Mon Sep 11 13:07:40 UTC 2023 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/scala.spec b/scala.spec
index e30b4e9..d390c53 100644
--- a/scala.spec
+++ b/scala.spec
@@ -57,23 +57,21 @@ Patch8:         scala-2.10.4-build_xml.patch
 # Stop scaladoc from trying to bundle non-existent resources that were
 # removed due to being in object form only, whithout sources
 Patch9:         scala-2.10.6-scaladoc-resources.patch
-Patch10:        scala-2.10.7-source6.patch
+Patch10:        scala-2.10.7-source8.patch
 Patch11:        scala-2.10.7-lines.patch
 Patch12:        scala-2.10.7-java8compat.patch
+Patch13:        scala-2.10.7-jdk15.patch
 BuildRequires:  ant
 BuildRequires:  ant-contrib
 BuildRequires:  ant-junit
 BuildRequires:  aqute-bnd
 BuildRequires:  graphviz
-BuildRequires:  java-devel >= 1.7
+BuildRequires:  java-devel >= 1.8
 BuildRequires:  javapackages-local
 BuildRequires:  jline >= 2.10
 BuildRequires:  junit
-BuildConflicts: java >= 9
-BuildConflicts: java-devel >= 9
-BuildConflicts: java-headless >= 9
 Requires:       jansi
-Requires:       java-headless >= 1.7
+Requires:       java-headless >= 1.8
 # Require full javapackages-tools since scripts use
 # /usr/share/java-utils/java-functions
 Requires:       javapackages-tools
@@ -115,7 +113,7 @@ reference and API documentation for the Scala programming language.
 Summary:        The swing library for the Scala programming languages
 Group:          Development/Libraries/Java
 Requires:       %{name} = %{version}-%{release}
-Requires:       java >= 1.7
+Requires:       java >= 1.8
 BuildArch:      noarch
 %if %{without bootstrap}
 Obsoletes:      %{base_name}-bootstrap-swing
@@ -154,9 +152,12 @@ the Scala ant tasks.
 %patch10 -p1 -b .source6
 %patch11 -p1 -b .jdk11
 %patch12 -p1 -b .java8compat
+%patch13 -p1 -b .jdk15
 
 echo "starr.version=2.10.4\nstarr.use.released=0" > starr.number
 
+rm -f src/compiler/scala/tools/ant/Pack200Task.scala
+
 pushd src
 rm -rf jline
 popd