diff --git a/icu-remove-datetime.patch b/icu-remove-datetime.patch
index ab80fc9..487db6c 100644
--- a/icu-remove-datetime.patch
+++ b/icu-remove-datetime.patch
@@ -1,3 +1,7 @@
+From: <vuntz@novell.com>
+
+Do not put date/time in icu-config (needed for build-compare)
+
 ---
  source/Makefile.in |    1 -
  1 file changed, 1 deletion(-)
diff --git a/icu-rpmlint.diff b/icu-rpmlint.diff
index 44bb8a8..38bf5d5 100644
--- a/icu-rpmlint.diff
+++ b/icu-rpmlint.diff
@@ -1,3 +1,8 @@
+From: Jan Engelhardt <jengelh@inai.de>
+Reference: http://bugs.icu-project.org/trac/ticket/7808
+
+build: resolve potential buffer overflow in icu
+
 I: Statement might be overflowing a buffer in strncat. Common mistake:
    BAD: strncat(buffer,charptr,sizeof(buffer)) is wrong, it takes the left over size as 3rd argument
    GOOD: strncat(buffer,charptr,sizeof(buffer)-strlen(buffer)-1)
diff --git a/icu.changes b/icu.changes
index 558b0a2..4cd54fd 100644
--- a/icu.changes
+++ b/icu.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Wed Jun  5 17:19:12 UTC 2013 - jengelh@inai.de
+
+- Update to new upstream release 51.2
+* Common Locale Data Repository (CLDR) 23.1
+* Time zone database version 2013c
+* Security fixes for font layout and glyph table errors. NOTE:
+  Applications must implement
+  LEFontInstance::getFontTable(LETag, size_t &length) in their
+  LEFontInstance subclasses, so that ICU can properly bounds-check
+  font tables.
+
 -------------------------------------------------------------------
 Mon May  6 07:51:07 UTC 2013 - jengelh@inai.de
 
diff --git a/icu.spec b/icu.spec
index 089cbfb..433c15d 100644
--- a/icu.spec
+++ b/icu.spec
@@ -18,9 +18,9 @@
 
 Name:           icu
 %define lname	libicu51
-Version:        51.1
+Version:        51.2
 Release:        0
-%define aversion 51_1
+%define aversion 51_2
 Summary:        International Components for Unicode
 License:        X11
 Group:          Development/Libraries/C and C++
@@ -29,11 +29,9 @@ Url:            http://icu-project.org/
 #DL-URL:	http://download.icu-project.org/files/icu4c/%version/icu4c-%aversion-src.tgz
 Source:         icu4c-%aversion-src.tar.xz
 Source2:        icu4c-%aversion-docs.tar.xz
-Source3:        download.sh
-# PATCH-FIX-UPSTREAM icu-rpmlint.diff -- http://bugs.icu-project.org/trac/ticket/7808
+Source3:        sanitize_docs.sh
 Patch1:         icu-rpmlint.diff
-# PATCH-FIX-OPENSUSE icu-remove-datetime.patch vuntz@novell.com -- Do not put date/time in icu-config (needed for build-compare)
-Patch99:        icu-remove-datetime.patch
+Patch2:         icu-remove-datetime.patch
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 BuildRequires:  pkg-config
@@ -56,8 +54,8 @@ This subpackage contains the runtime programs for interacting with ICU.
 # icudata (largest part) is always needed.
 Summary:        International Components for Unicode (development files)
 Group:          Development/Libraries/C and C++
-# bug437293
 %ifarch ppc64
+# bug437293
 Obsoletes:      libicu-64bit
 %endif
 Requires:       timezone
@@ -74,11 +72,10 @@ libraries for ICU which include precompiled locale data.
 %package -n libicu-devel
 Summary:        International Components for Unicode (development files)
 Group:          Development/Libraries/C and C++
-# bug437293
 %ifarch ppc64
+# bug437293
 Obsoletes:      libicu-devel-64bit
 %endif
-#
 Requires:       %lname = %version
 
 %description -n libicu-devel
@@ -111,8 +108,7 @@ the "%lname" package.
 
 %prep
 %setup -qn icu -a2
-%patch1 -p1
-%patch99 -p1
+%patch -P 1 -P 2 -p1
 
 %build
 cd source
diff --git a/icu4c-51_1-docs.tar.xz b/icu4c-51_1-docs.tar.xz
deleted file mode 100644
index fab00f7..0000000
--- a/icu4c-51_1-docs.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c0a57d4a10421e9ed24aed657bd430174986b85fe0e4d6df9068eaed184e7102
-size 2587952
diff --git a/icu4c-51_1-src.tar.xz b/icu4c-51_1-src.tar.xz
deleted file mode 100644
index c3e3470..0000000
--- a/icu4c-51_1-src.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:20ac1bb25a1b4c214bd551d0bd00801952bbba2ad3b01dd1392ebcc72a07f435
-size 11994208
diff --git a/icu4c-51_2-docs.tar.xz b/icu4c-51_2-docs.tar.xz
new file mode 100644
index 0000000..49085b6
--- /dev/null
+++ b/icu4c-51_2-docs.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cb795ee5e6d80dcc4e72087694094428f3d6a0a3e57b0d80b02a8e4157b92cba
+size 2410720
diff --git a/icu4c-51_2-src.tar.xz b/icu4c-51_2-src.tar.xz
new file mode 100644
index 0000000..df16faa
--- /dev/null
+++ b/icu4c-51_2-src.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:67719e4f6292e7262c4d6ddba60b3a40d5df30af5f97aa50a706a993561ca3ec
+size 12147252
diff --git a/download.sh b/sanitize_docs.sh
similarity index 73%
rename from download.sh
rename to sanitize_docs.sh
index 196cf3e..c07c96e 100644
--- a/download.sh
+++ b/sanitize_docs.sh
@@ -1,7 +1,9 @@
 #!/bin/sh -ex
 
-ver="51.1"
-name="icu4c-51_1-docs.zip"
+ver="51.2"
+name="icu4c-51_2-docs.zip"
+
+# Put docs in a separate directory
 wget -c "http://download.icu-project.org/files/icu4c/$ver/$name"
 rm -Rf html
 mkdir html