diff --git a/apache-sshd-2.4.0-java8.patch b/apache-sshd-2.4.0-java8.patch
new file mode 100644
index 0000000..eeb8505
--- /dev/null
+++ b/apache-sshd-2.4.0-java8.patch
@@ -0,0 +1,75 @@
+--- apache-sshd-2.4.0/sshd-core/src/main/java/org/apache/sshd/common/io/nio2/Nio2Session.java	2020-07-16 23:25:44.981904289 +0200
++++ apache-sshd-2.4.0/sshd-core/src/main/java/org/apache/sshd/common/io/nio2/Nio2Session.java	2020-07-16 23:49:34.043250054 +0200
+@@ -362,13 +362,13 @@
+                 if (debugEnabled) {
+                     log.debug("handleReadCycleCompletion({}) read {} bytes", this, result);
+                 }
+-                buffer.flip();
++                ((java.nio.Buffer)buffer).flip();
+ 
+                 IoHandler handler = getIoHandler();
+                 handler.messageReceived(this, bufReader);
+                 if (!closeFuture.isClosed()) {
+                     // re-use reference for next iteration since we finished processing it
+-                    buffer.clear();
++                    ((java.nio.Buffer)buffer).clear();
+                     doReadCycle(buffer, completionHandler);
+                 } else {
+                     if (debugEnabled) {
+--- apache-sshd-2.4.0/sshd-sftp/src/main/java/org/apache/sshd/client/subsystem/sftp/SftpRemotePathChannel.java	2020-07-16 23:25:44.961904157 +0200
++++ apache-sshd-2.4.0/sshd-sftp/src/main/java/org/apache/sshd/client/subsystem/sftp/SftpRemotePathChannel.java	2020-07-16 23:38:16.702818800 +0200
+@@ -20,6 +20,7 @@
+ package org.apache.sshd.client.subsystem.sftp;
+ 
+ import java.io.IOException;
++import java.nio.Buffer;
+ import java.nio.ByteBuffer;
+ import java.nio.MappedByteBuffer;
+ import java.nio.channels.AsynchronousCloseException;
+@@ -123,7 +124,7 @@
+                         int read = sftp.read(handle, curPos, wrap.array(), wrap.arrayOffset() + wrap.position(), wrap.remaining());
+                         if (read > 0) {
+                             if (wrap == buffer) {
+-                                wrap.position(wrap.position() + read);
++                                ((Buffer)wrap).position(wrap.position() + read);
+                             } else {
+                                 buffer.put(wrap.array(), wrap.arrayOffset(), read);
+                             }
+@@ -191,7 +192,7 @@
+                         int written = wrap.remaining();
+                         sftp.write(handle, curPos, wrap.array(), wrap.arrayOffset() + wrap.position(), written);
+                         if (wrap == buffer) {
+-                            wrap.position(wrap.position() + written);
++                            ((Buffer)wrap).position(wrap.position() + written);
+                         }
+                         curPos += written;
+                         totalWritten += written;
+--- apache-sshd-2.4.0/sshd-sftp/src/main/java/org/apache/sshd/server/subsystem/sftp/AbstractSftpSubsystemHelper.java	2020-07-16 23:25:44.961904157 +0200
++++ apache-sshd-2.4.0/sshd-sftp/src/main/java/org/apache/sshd/server/subsystem/sftp/AbstractSftpSubsystemHelper.java	2020-07-16 23:51:17.255925762 +0200
+@@ -980,7 +980,7 @@
+                     if (remainLen < digestBuf.length) {
+                         bb = ByteBuffer.wrap(digestBuf, 0, remainLen);
+                     }
+-                    bb.clear(); // prepare for next read
++                    ((java.nio.Buffer)bb).clear(); // prepare for next read
+ 
+                     int readLen = channel.read(bb);
+                     if (readLen < 0) {
+@@ -1005,7 +1005,7 @@
+                     if (remainLen < digestBuf.length) {
+                         bb = ByteBuffer.wrap(digestBuf, 0, remainLen);
+                     }
+-                    bb.clear(); // prepare for next read
++                    ((java.nio.Buffer)bb).clear(); // prepare for next read
+ 
+                     int readLen = channel.read(bb);
+                     if (readLen < 0) {
+@@ -1140,7 +1140,7 @@
+                     if (remainLen < digestBuf.length) {
+                         bb = ByteBuffer.wrap(digestBuf, 0, remainLen);
+                     }
+-                    bb.clear(); // prepare for next read
++                    ((java.nio.Buffer)bb).clear(); // prepare for next read
+ 
+                     int readLen = channel.read(bb);
+                     if (readLen < 0) {
diff --git a/apache-sshd.changes b/apache-sshd.changes
index 4a26d6b..43b9d53 100644
--- a/apache-sshd.changes
+++ b/apache-sshd.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Jul 16 21:58:44 UTC 2020 - Fridrich Strba <fstrba@suse.com>
+
+- Added patch:
+  * apache-sshd-2.4.0-java8.patch
+    + restore Java 8 compatibility of bytecode generated by Java 9+
+
 -------------------------------------------------------------------
 Mon Jun 29 11:32:37 UTC 2020 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/apache-sshd.spec b/apache-sshd.spec
index 65c90ba..f2ccaab 100644
--- a/apache-sshd.spec
+++ b/apache-sshd.spec
@@ -27,6 +27,7 @@ URL:            https://mina.apache.org/sshd-project
 Source0:        https://archive.apache.org/dist/mina/sshd/%{version}/apache-sshd-%{version}-src.tar.gz
 # Avoid optional dep on tomcat native APR library
 Patch0:         0001-Avoid-optional-dependency-on-native-tomcat-APR-libra.patch
+Patch1:         apache-sshd-2.4.0-java8.patch
 BuildRequires:  fdupes
 BuildRequires:  maven-local
 BuildRequires:  mvn(junit:junit)
@@ -58,6 +59,7 @@ This package provides %{name}.
 
 %prep
 %setup -q
+%patch1 -p1
 
 # Avoid optional dep on tomcat native APR library
 %patch0 -p1