diff -Nru jython-2.7.1+repack1/debian/changelog jython-2.7.1+repack1/debian/changelog
--- jython-2.7.1+repack1/debian/changelog	2019-05-04 16:16:46.000000000 +0000
+++ jython-2.7.1+repack1/debian/changelog	2019-08-08 08:11:23.000000000 +0000
@@ -1,3 +1,11 @@
+jython (2.7.1+repack1-4) unstable; urgency=medium
+
+  * Team upload.
+  * Preserve the backward compatibility with Java 7 (Closes: #934111)
+  * Adjusted the Vcs-* fields
+
+ -- Emmanuel Bourg <ebourg@apache.org>  Thu, 08 Aug 2019 10:11:23 +0200
+
 jython (2.7.1+repack1-3) unstable; urgency=medium
 
   * Improve previous fix with default-jre-headless (>= 2:1.9), thanks to
diff -Nru jython-2.7.1+repack1/debian/control jython-2.7.1+repack1/debian/control
--- jython-2.7.1+repack1/debian/control	2019-05-04 16:14:46.000000000 +0000
+++ jython-2.7.1+repack1/debian/control	2019-08-08 08:04:43.000000000 +0000
@@ -25,14 +25,14 @@
  libicu4j-java,
  libnetty-java
 Standards-Version: 4.2.1
-Vcs-Git: https://salsa.debian.org/java-team/jython
-Vcs-Browser: https://salsa.debian.org/java-team/jython.git
+Vcs-Git: https://salsa.debian.org/java-team/jython.git
+Vcs-Browser: https://salsa.debian.org/java-team/jython
 Homepage: http://www.jython.org
 
 Package: jython
 Architecture: all
 Depends: ${misc:Depends}, ${perl:Depends}, ${python:Depends}, ${java:Depends},
- default-jre-headless (>= 2:1.9) | java9-runtime-headless,
+ default-jre-headless (>= 2:1.7) | java7-runtime-headless,
 Recommends: default-jdk | java-compiler
 Suggests: jython-doc, libmariadb-java, libpostgresql-jdbc-java
 Description: Python seamlessly integrated with Java
diff -Nru jython-2.7.1+repack1/debian/patches/08-java-backward-compatibility.patch jython-2.7.1+repack1/debian/patches/08-java-backward-compatibility.patch
--- jython-2.7.1+repack1/debian/patches/08-java-backward-compatibility.patch	1970-01-01 00:00:00.000000000 +0000
+++ jython-2.7.1+repack1/debian/patches/08-java-backward-compatibility.patch	2019-08-08 08:08:43.000000000 +0000
@@ -0,0 +1,45 @@
+Description: Preserves the backward compatibility with previous Java versions when built with Java 11+
+Author: Emmanuel Bourg <ebourg@apache.org>
+Forwarded: not
+--- a/build.xml
++++ b/build.xml
+@@ -436,6 +436,7 @@
+                 destdir="${compile.dir}"
+                 target="${jdk.target.version}"
+                 source="${jdk.source.version}"
++                release="${jdk.target.version}"
+                 debug="${debug}"
+                 deprecation="${deprecation}"
+                 nowarn="${nowarn}">
+@@ -483,6 +484,7 @@
+         <javac destdir="${compile.dir}"
+                target="${jdk.target.version}"
+                source="${jdk.source.version}"
++               release="${jdk.target.version}"
+                debug="${debug}"
+                deprecation="${deprecation}"
+                nowarn="${nowarn}"
+@@ -502,6 +504,7 @@
+                destdir="${compile.dir}"
+                target="${jdk.target.version}"
+                source="${jdk.source.version}"
++               release="${jdk.target.version}"
+                debug="${debug}"
+                deprecation="${deprecation}"
+                nowarn="${nowarn}">
+@@ -513,6 +516,7 @@
+                destdir="${compile.dir}"
+                target="${jdk.target.version}"
+                source="${jdk.source.version}"
++               release="${jdk.target.version}"
+                debug="${debug}"
+                deprecation="${deprecation}"
+                nowarn="${nowarn}"
+@@ -882,6 +886,7 @@
+                destdir="${compile.dir}"
+                target="${jdk.target.version}"
+                source="${jdk.source.version}"
++               release="${jdk.target.version}"
+                debug="${debug}"
+                deprecation="${deprecation}"
+                nowarn="${nowarn}"
diff -Nru jython-2.7.1+repack1/debian/patches/series jython-2.7.1+repack1/debian/patches/series
--- jython-2.7.1+repack1/debian/patches/series	2019-01-12 18:49:41.000000000 +0000
+++ jython-2.7.1+repack1/debian/patches/series	2019-08-08 07:49:44.000000000 +0000
@@ -4,3 +4,4 @@
 05-no-com.carrotsearch.sizeof.patch
 javadoc-classpath.patch
 reproducible-builds.patch
+08-java-backward-compatibility.patch
diff -Nru jython-2.7.1+repack1/debian/rules jython-2.7.1+repack1/debian/rules
--- jython-2.7.1+repack1/debian/rules	2019-01-13 11:14:47.000000000 +0000
+++ jython-2.7.1+repack1/debian/rules	2019-08-08 07:54:17.000000000 +0000
@@ -74,6 +74,7 @@
 	# Build the class files.
 	# -nouserlib is required to prevent conflicts with the ant jython plugin
 	ant -nouserlib developer-build jar javadoc \
+	  -Djython.java.version=7 \
 	  -Dmain.classpath=$(OUR_MAIN_CLASSPATH) \
 	  -Dtest.classpath=$(OUR_TEST_CLASSPATH) \
 	  -Druntime.classpath="$(OUR_RUNTIME_CLASSPATH)"