diff --git a/libical.changes b/libical.changes
index ac13626..d895607 100644
--- a/libical.changes
+++ b/libical.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Sep  9 07:36:22 UTC 2016 - zaitor@opensuse.org
+
+- Add pkgconfig(icu-i18n) BuildRequires: Build the new RSCALE
+  support.
+
 -------------------------------------------------------------------
 Thu Jul 21 07:42:45 UTC 2016 - dimstar@opensuse.org
 
diff --git a/libical.spec b/libical.spec
index e09d225..377e001 100644
--- a/libical.spec
+++ b/libical.spec
@@ -29,6 +29,7 @@ Source2:        baselibs.conf
 BuildRequires:  cmake >= 2.4
 BuildRequires:  gcc-c++
 BuildRequires:  pkg-config
+BuildRequires:  pkgconfig(icu-i18n)
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description