diff --git a/MANIFEST.MF b/MANIFEST.MF
index 90c66e8..d88e06b 100644
--- a/MANIFEST.MF
+++ b/MANIFEST.MF
@@ -1,9 +1,10 @@
 Manifest-Version: 1.0
+Bundle-SymbolicName: org.eclipse.jdt.core.compiler.batch
 Archiver-Version: Plexus Archiver
-Created-By: Apache Maven
 Built-By: e4Build
-Build-Jdk: 1.8.0_51
-Bundle-SymbolicName: org.eclipse.jdt.core.compiler.batch
+Bundle-ManifestVersion: 2
+Bundle-Vendor: Eclipse.org
+Main-Class: org.eclipse.jdt.internal.compiler.batch.Main
 Export-Package: org.eclipse.jdt.core,org.eclipse.jdt.core.compiler,org
  .eclipse.jdt.internal.antadapter;x-internal:=true,org.eclipse.jdt.int
  ernal.compiler;x-internal:=true,org.eclipse.jdt.internal.compiler.apt
@@ -19,11 +20,11 @@ Export-Package: org.eclipse.jdt.core,org.eclipse.jdt.core.compiler,org
  nternal.compiler.parser;x-internal:=true,org.eclipse.jdt.internal.com
  piler.parser.diagnose;x-internal:=true,org.eclipse.jdt.internal.compi
  ler.problem;x-internal:=true,org.eclipse.jdt.internal.compiler.util;x
- -internal:=true,org.eclipse.jdt.internal.compiler.tool;x-internal:=true
+ -internal:=true,org.eclipse.jdt.internal.compiler.tool;x-internal:=tr
+ ue
 Bundle-Name: Eclipse Compiler for Java(TM)
-Bundle-Version: 3.11.2.v20160128-0629
+Bundle-Version: 3.12.0.v20160516-2131
 Bundle-ClassPath: .
-Bundle-ManifestVersion: 2
-Bundle-Vendor: Eclipse.org
-Main-Class: org.eclipse.jdt.internal.compiler.batch.Main
+Created-By: Apache Maven
+Build-Jdk: 1.8.0_51
 
diff --git a/ecj.spec b/ecj.spec
index 928db86..9cc0aed 100644
--- a/ecj.spec
+++ b/ecj.spec
@@ -1,11 +1,11 @@
 Epoch: 1
 
-%global qualifier R-4.5.2-201602121500
+%global qualifier R-4.6-201606061100
 
 Summary: Eclipse Compiler for Java
 Name: ecj
-Version: 4.5.2
-Release: 3%{?dist}
+Version: 4.6
+Release: 1%{?dist}
 URL: http://www.eclipse.org
 License: EPL
 
@@ -24,8 +24,6 @@ BuildRequires: gzip
 BuildRequires: ant
 BuildRequires: javapackages-local
 
-Obsoletes: %{name}-native < 1:4.2.1-10
-
 %description
 ECJ is the Java bytecode compiler of the Eclipse Platform.  It is also known as
 the JDT Core batch compiler.
@@ -36,9 +34,6 @@ the JDT Core batch compiler.
 
 sed -i -e 's|debuglevel=\"lines,source\"|debug=\"yes\"|g' build.xml
 sed -i -e "s/Xlint:none/Xlint:none -encoding cp1252/g" build.xml
-sed -i -e 's|1.6|1.7|g' build.xml
-sed -i -e 's|import org.eclipse.jdt.core.JavaCore;||g' org/eclipse/jdt/internal/compiler/batch/ClasspathDirectory.java
-sed -i -e 's|JavaCore.getOptions()||g' org/eclipse/jdt/internal/compiler/batch/ClasspathDirectory.java
 
 cp %{SOURCE3} pom.xml
 mkdir -p scripts/binary/META-INF/
@@ -78,6 +73,9 @@ install -m 644 -p ecj.1.gz $RPM_BUILD_ROOT%{_mandir}/man1/ecj.1.gz
 %{_mandir}/man1/ecj*
 
 %changelog
+* Fri Jul 01 2016 Mat Booth <mat.booth@redhat.com> - 1:4.6-1
+- Update to Neon release
+
 * Tue Apr 26 2016 Mikolaj Izdebski <mizdebsk@redhat.com> - 4.5.2-3
 - Re-add alias for org.eclipse.jdt:core
 
diff --git a/sources b/sources
index 3eb7022..407a108 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-7b90390195d55d16d7ccea8362aecdcc  ecjsrc-4.5.2.jar
-c8809789ec9b0f262a0c38bfeeeb0b35  ecj-4.5.2.pom
+593da93d62e5e9459218dc26c985afac  ecj-4.6.pom
+7cf96fc78a6e85f0c96bf96bcce08ebc  ecjsrc-4.6.jar