diff --git a/icu4j-50.1.1.pom b/icu4j-50.1.1.pom
deleted file mode 100644
index 4fdb77a..0000000
--- a/icu4j-50.1.1.pom
+++ /dev/null
@@ -1,134 +0,0 @@
-<!--
-*******************************************************************************
-* Copyright (C) 2010-2011, International Business Machines Corporation and    *
-* others. All Rights Reserved.                                                *
-*******************************************************************************
---><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
- 
-  <groupId>com.ibm.icu</groupId>
-  <artifactId>icu4j</artifactId>
-  <version>50.1.1</version>
- 
-  <name>ICU4J</name>
-  <description>
-    International Component for Unicode for Java (ICU4J) is a mature, widely used Java library
-    providing Unicode and Globalization support
-  </description>
-  <url>http://icu-project.org/</url>
-  <inceptionYear>2001</inceptionYear>
-  <licenses>
-    <license>
-      <name>ICU License</name>
-      <url>http://source.icu-project.org/repos/icu/icu/trunk/license.html</url>
-      <distribution>repo</distribution>
-    </license>
-  </licenses>
- 
-  <developers>
-    <developer>
-      <id>mark</id>
-      <name>Mark Davis</name>
-      <organization>Google</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-    <developer>
-      <id>emmons</id>
-      <name>John Emmons</name>
-      <organization>IBM Corporation</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-    <developer>
-      <id>doug</id>
-      <name>Doug Felt</name>
-      <organization>Google</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-    <developer>
-      <id>deborah</id>
-      <name>Deborah Goldsmith</name>
-      <organization>Apple</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-    <developer>
-      <id>srl</id>
-      <name>Steven Loomis</name>
-      <organization>IBM Corporation</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-    <developer>
-      <id>markus</id>
-      <name>Markus Scherer</name>
-      <organization>Google</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-    <developer>
-      <id>yoshito</id>
-      <name>Yoshito Umaoka</name>
-      <organization>IBM Corporation</organization>
-      <roles>
-        <role>PMC Member</role>
-      </roles>
-    </developer>
-  </developers>
- 
-  <mailingLists>
-    <mailingList>
-      <name>icu-support</name>
-      <subscribe>https://lists.sourceforge.net/lists/listinfo/icu-support</subscribe>
-      <unsubscribe>https://lists.sourceforge.net/lists/listinfo/icu-support</unsubscribe>
-      <post>icu-support@lists.sourceforge.net</post>
-      <archive>http://sourceforge.net/mailarchive/forum.php?forum_name=icu-support</archive>
-    </mailingList>
-    <mailingList>
-      <name>icu-announce</name>
-      <subscribe>https://lists.sourceforge.net/lists/listinfo/icu-announce</subscribe>
-      <unsubscribe>https://lists.sourceforge.net/lists/listinfo/icu-announce</unsubscribe>
-      <post>icu-announce@lists.sourceforge.net</post>
-      <archive>http://sourceforge.net/mailarchive/forum.php?forum_name=icu-announce</archive>
-    </mailingList>
-    <mailingList>
-      <name>icu-design</name>
-      <subscribe>https://lists.sourceforge.net/lists/listinfo/icu-design</subscribe>
-      <unsubscribe>https://lists.sourceforge.net/lists/listinfo/icu-design</unsubscribe>
-      <post>icu-design@lists.sourceforge.net</post>
-      <archive>http://sourceforge.net/mailarchive/forum.php?forum_name=icu-design</archive>
-    </mailingList>
-  </mailingLists>
- 
-  <scm>
-    <connection>scm:svn:http://source.icu-project.org/repos/icu/icu4j/trunk/</connection>
-    <developerConnection>scm:svn:http://source.icu-project.org/repos/icu/icu4j/trunk/</developerConnection>
-    <url>http://source.icu-project.org/repos/icu/icu4j/trunk/</url>
-  </scm>
-  <issueManagement>
-    <system>Trac</system>
-    <url>http://bugs.icu-project.org/trac/</url>
-  </issueManagement>
- 
-  <distributionManagement>
-    <repository>
-      <id>icu4j-releases</id>
-      <name>ICU4J Central Repository</name>
-      <url>http://oss.sonatype.org/service/local/staging/deploy/maven2</url>
-    </repository>
-    <snapshotRepository>
-      <id>icu4j-snapshots</id>
-      <name>ICU4J Central Development Repository</name>
-      <url>http://oss.sonatype.org/content/repositories/snapshots</url>
-    </snapshotRepository>
-  </distributionManagement>
-</project>
-
diff --git a/icu4j-52.1.pom b/icu4j-52.1.pom
new file mode 100644
index 0000000..f7c681e
--- /dev/null
+++ b/icu4j-52.1.pom
@@ -0,0 +1,144 @@
+<?xml version="1.0"?>
+<!--
+*******************************************************************************
+* Copyright (C) 2010-2013, International Business Machines Corporation and    *
+* others. All Rights Reserved.                                                *
+*******************************************************************************
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.ibm.icu</groupId>
+  <artifactId>icu4j</artifactId>
+  <version>52.1</version>
+
+  <name>ICU4J</name>
+  <description>
+    International Component for Unicode for Java (ICU4J) is a mature, widely used Java library
+    providing Unicode and Globalization support 
+  </description>
+  <url>http://icu-project.org/</url>
+  <inceptionYear>2001</inceptionYear>
+  <licenses>
+    <license>
+      <name>ICU License</name>
+      <url>http://source.icu-project.org/repos/icu/icu/trunk/license.html</url>
+      <distribution>repo</distribution>
+    </license>
+  </licenses>
+
+  <developers>
+    <developer>
+      <id>mark</id>
+      <name>Mark Davis</name>
+      <organization>Google</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>emmons</id>
+      <name>John Emmons</name>
+      <organization>IBM Corporation</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>doug</id>
+      <name>Doug Felt</name>
+      <organization>Google</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>deborah</id>
+      <name>Deborah Goldsmith</name>
+      <organization>Apple</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>srl</id>
+      <name>Steven Loomis</name>
+      <organization>IBM Corporation</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>markus</id>
+      <name>Markus Scherer</name>
+      <organization>Google</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>pedberg</id>
+      <name>Peter Edberg</name>
+      <organization>Apple</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+    <developer>
+      <id>yoshito</id>
+      <name>Yoshito Umaoka</name>
+      <organization>IBM Corporation</organization>
+      <roles>
+        <role>PMC Member</role>
+      </roles>
+    </developer>
+  </developers>
+
+  <mailingLists>
+    <mailingList>
+      <name>icu-support</name>
+      <subscribe>https://lists.sourceforge.net/lists/listinfo/icu-support</subscribe>
+      <unsubscribe>https://lists.sourceforge.net/lists/listinfo/icu-support</unsubscribe>
+      <post>icu-support@lists.sourceforge.net</post>
+      <archive>http://sourceforge.net/mailarchive/forum.php?forum_name=icu-support</archive>
+    </mailingList>
+    <mailingList>
+      <name>icu-announce</name>
+      <subscribe>https://lists.sourceforge.net/lists/listinfo/icu-announce</subscribe>
+      <unsubscribe>https://lists.sourceforge.net/lists/listinfo/icu-announce</unsubscribe>
+      <post>icu-announce@lists.sourceforge.net</post>
+      <archive>http://sourceforge.net/mailarchive/forum.php?forum_name=icu-announce</archive>
+    </mailingList>
+    <mailingList>
+      <name>icu-design</name>
+      <subscribe>https://lists.sourceforge.net/lists/listinfo/icu-design</subscribe>
+      <unsubscribe>https://lists.sourceforge.net/lists/listinfo/icu-design</unsubscribe>
+      <post>icu-design@lists.sourceforge.net</post>
+      <archive>http://sourceforge.net/mailarchive/forum.php?forum_name=icu-design</archive>
+    </mailingList>
+  </mailingLists>
+
+  <scm>
+    <connection>scm:svn:http://source.icu-project.org/repos/icu/icu4j/trunk/</connection>
+    <developerConnection>scm:svn:http://source.icu-project.org/repos/icu/icu4j/trunk/</developerConnection>
+    <url>http://source.icu-project.org/repos/icu/icu4j/trunk/</url>
+  </scm>
+  <issueManagement>
+    <system>Trac</system>
+    <url>http://bugs.icu-project.org/trac/</url>
+  </issueManagement>
+
+  <distributionManagement>
+    <repository>
+      <id>icu4j-releases</id>
+      <name>ICU4J Central Repository</name>
+      <url>http://oss.sonatype.org/service/local/staging/deploy/maven2</url>
+    </repository>
+    <snapshotRepository>
+      <id>icu4j-snapshots</id>
+      <name>ICU4J Central Development Repository</name>
+      <url>http://oss.sonatype.org/content/repositories/snapshots</url>
+    </snapshotRepository>
+  </distributionManagement>
+</project>
diff --git a/icu4j.spec b/icu4j.spec
index 7b1bbf8..ef4b9ee 100644
--- a/icu4j.spec
+++ b/icu4j.spec
@@ -50,8 +50,8 @@
 %endif
 
 Name:           %{?scl_prefix}icu4j
-Version:        50.1.1
-Release:        2%{?dist}
+Version:        52.1
+Release:        1%{?dist}
 Epoch:          1
 Summary:        International Components for Unicode for Java
 License:        MIT and EPL 
@@ -59,7 +59,7 @@ URL:            http://site.icu-project.org/
 Group:          Development/Libraries
 #CAUTION
 #to create a tarball use following procedure
-#svn co http://source.icu-project.org/repos/icu/icu4j/tags/release-50-1-1-eclipse-20130412 icu4j-<version>
+#svn co http://source.icu-project.org/repos/icu/icu4j/tags/release-52-eclipse-20140218 icu4j-<version>
 #tar caf icu4j-<version>.tar.xz icu4j-<version>/
 Source0:        icu4j-%{version}.tar.xz
 Source1:        %{pkg_name}-%{version}.pom
@@ -76,7 +76,7 @@ BuildRequires:  zip
 Requires:       jpackage-utils
 %{?scl:Requires: %scl_runtime}
 # This is to ensure we get OpenJDK and not GCJ
-Requires:       java >= 1:1.6.0
+Requires:       java-headless >= 1:1.6.0
 %if %{with_eclipse}
 BuildRequires:  %{?scl_prefix}eclipse-pde >= 0:3.2.1
 %global         debug_package %{nil}
@@ -148,6 +148,7 @@ sed --in-place "s:/usr/lib:%{_datadir}:g" build.xml
 ECLIPSE_BASE=%{eclipse_base}
 pushd eclipse-build
   %ant -Dj2se.apidoc=%{_javadocdir}/java -Declipse.home=${ECLIPSE_BASE} \
+    -Djava.rt=%{_jvmdir}/jre/lib/rt.jar \
     -Declipse.basews=gtk -Declipse.baseos=linux \
     -Declipse.pde.dir=${ECLIPSE_BASE}/dropins/sdk/plugins/`ls ${ECLIPSE_BASE}/dropins/sdk/plugins/|grep org.eclipse.pde.build_`
 popd
@@ -199,6 +200,10 @@ cp %{pkg_name}-%{version}.pom $RPM_BUILD_ROOT%{_mavenpomdir}/JPP-%{pkg_name}.pom
 %endif
 
 %changelog
+* Tue Mar 18 2014 Michael Simacek <msimacek@redhat.com> - 1:52.1-1
+- Update to upstream version 52.1
+- Require java-headless
+
 * Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1:50.1.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
 
diff --git a/sources b/sources
index 4b78f72..e9b179d 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-eb2503b3fa9ada9bff88208835d68280  icu4j-50.1.1.tar.xz
+e52729889dafc60a25b2a8d3a82725be  icu4j-52.1.tar.xz