diff --git a/bsh-source-1.6.patch b/bsh-source-1.6.patch
new file mode 100644
index 0000000..c1ca364
--- /dev/null
+++ b/bsh-source-1.6.patch
@@ -0,0 +1,21 @@
+--- beanshell-2.0b6/build.xml~	2016-02-05 18:16:07.000000000 +0100
++++ beanshell-2.0b6/build.xml	2019-10-28 14:00:52.279528558 +0100
+@@ -170,7 +170,8 @@
+ 			deprecation="${deprecation}"
+ 			optimize="on"
+ 			debug="on"
+-      target="1.5"
++      source="1.6"
++      target="1.6"
+ 			includes="**/*.java"
+ 			excludes="${excludes},**/bak/**"
+ 		>
+@@ -213,7 +214,7 @@
+ 			 destdir="${javadoc-dir}"
+ 			 author="true"
+ 			 version="true"
+-       source="1.5"
++       source="1.6"
+ 			 use="true"
+ 			 windowtitle="BeanShell ${version}"
+ 			 doctitle="<h1>BeanShell ${version}<h1>"
diff --git a/bsh.spec b/bsh.spec
index 24e8e1f..c905c93 100644
--- a/bsh.spec
+++ b/bsh.spec
@@ -47,6 +47,8 @@ Source0:        %{name}-2.0-b6.tar.gz
 # Remove code marked as SUN PROPRIETARY/CONFIDENTAIL
 Source2:        generate-tarball.sh
 
+Patch0:         %{name}-source-1.6.patch
+
 BuildRequires:  javapackages-local
 BuildRequires:  ant
 BuildRequires:  bsf
@@ -102,6 +104,7 @@ This package provides %{summary}.
 
 %prep
 %setup -q -n beanshell-%{upstream_version}
+%patch0 -p1
 
 sed -i 's,org.apache.xalan.xslt.extensions.Redirect,http://xml.apache.org/xalan/redirect,' docs/manual/xsl/*.xsl