diff --git a/0001-build-ICU-must-appear-as-Requires-in-pkgconfig.patch b/0001-build-ICU-must-appear-as-Requires-in-pkgconfig.patch
new file mode 100644
index 0000000..4a4f9f8
--- /dev/null
+++ b/0001-build-ICU-must-appear-as-Requires-in-pkgconfig.patch
@@ -0,0 +1,43 @@
+From 101a29ef57341a786012eb07dcfcec5c597f4493 Mon Sep 17 00:00:00 2001
+X-Backport: Rediff for 2.0.0
+From: Jan Engelhardt <jengelh@inai.de>
+Date: Mon, 3 Oct 2016 10:25:00 +0200
+Subject: [PATCH] build: ICU must appear as Requires in pkgconfig
+References: https://github.com/libical/libical/pull/244
+
+libical.pc specifies -licu-i18n in its Libs: field,
+but no Requires: icu-i18n. As a result, the automatic dependency
+generator in Linux distributions won't see the ICU requirement,
+won't install it, and builds of secondary software fails.
+
+$ gcc icalthing.c `pkg-config libical --cflags --libs`
+[...]
+gcc: error: /usr/lib64/libicuuc.so: No such file or directory
+
+Move ICU from Libs to Requires, so the dependency scanner can do its
+job. Specifically move it to Requires.private, since specifying -licu*
+is not normally needed when libical is a shared library since it
+already has it recorded in the ELF.
+---
+ libical.pc.in |    6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+Index: libical-2.0.0/libical.pc.in
+===================================================================
+--- libical-2.0.0.orig/libical.pc.in
++++ libical-2.0.0/libical.pc.in
+@@ -2,11 +2,11 @@ prefix=@prefix@
+ exec_prefix=@exec_prefix@
+ libdir=@libdir@
+ includedir=@includedir@
+-threadslib=@PTHREAD_LIBS@
+-iculib=@ICU_LIBRARIES@ @ICU_I18N_LIBRARIES@
+ 
+ Name: libical
+ Description: An implementation of basic iCAL protocols
+ Version: @VERSION@
+-Libs: -L${libdir} -lical -licalss -licalvcal ${threadslib} ${iculib}
++Libs: -L${libdir} -lical -licalss -licalvcal
++Libs.private: @PTHREAD_LIBS@
++Requires.private: icu-i18n
+ Cflags: -I${includedir}
diff --git a/libical.changes b/libical.changes
index 20ecb9a..21987e2 100644
--- a/libical.changes
+++ b/libical.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Oct  3 08:38:07 UTC 2016 - jengelh@inai.de
+
+- Add 0001-build-ICU-must-appear-as-Requires-in-pkgconfig.patch
+
 -------------------------------------------------------------------
 Thu Sep 29 14:06:35 UTC 2016 - jengelh@inai.de
 
diff --git a/libical.spec b/libical.spec
index 377e001..29db2fc 100644
--- a/libical.spec
+++ b/libical.spec
@@ -24,8 +24,11 @@ Summary:        An Implementation of Basic iCAL Protocols
 License:        MPL-1.0 or LGPL-2.1
 Group:          Development/Libraries/C and C++
 Url:            http://sourceforge.net/projects/freeassociation/
+
+#Git-Clone:     https://github.com/libical/libical
 Source:         https://github.com/libical/libical/releases/download/v%{version}/%{name}-%{version}.tar.gz
 Source2:        baselibs.conf
+Patch1:         0001-build-ICU-must-appear-as-Requires-in-pkgconfig.patch
 BuildRequires:  cmake >= 2.4
 BuildRequires:  gcc-c++
 BuildRequires:  pkg-config
@@ -87,6 +90,7 @@ component properties, parameters, and subcomponents.
 
 %prep
 %setup -q
+%patch -P 1 -p1
 
 %build
 %cmake