diff --git a/wsdl4j.changes b/wsdl4j.changes
index f3f77fd..1c02507 100644
--- a/wsdl4j.changes
+++ b/wsdl4j.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Sep 11 20:09:45 UTC 2017 - fstrba@suse.com
+
+- Specify java source and target level 1.6 in order to allow
+  building with jdk9
+
 -------------------------------------------------------------------
 Fri May 19 12:12:11 UTC 2017 - tchvatal@suse.com
 
diff --git a/wsdl4j.spec b/wsdl4j.spec
index 3890515..0c8c083 100644
--- a/wsdl4j.spec
+++ b/wsdl4j.spec
@@ -60,7 +60,7 @@ Description Language for Java.
 %setup -q -n %{name}-1_6_3
 
 %build
-ant -Dant.build.javac.source=1.5 -Dant.build.javac.target=1.5 compile javadocs
+ant -Dant.build.javac.source=1.6 -Dant.build.javac.target=1.6 compile javadocs
 
 %install
 # inject OSGi manifests