diff --git a/.gitignore b/.gitignore
index 23895e4..1111c06 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@
 /cmake-3.5.0.tar.gz
 /cmake-3.5.1.tar.gz
 /cmake-3.5.2.tar.gz
+/cmake-3.6.0-rc4.tar.gz
diff --git a/cmake-libarchive.patch b/cmake-libarchive.patch
deleted file mode 100644
index 67eb9b4..0000000
--- a/cmake-libarchive.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-From 92c47b8786fdd41f4b9d882386b7acf585f1c00a Mon Sep 17 00:00:00 2001
-From: Orion Poplawski <orion@cora.nwra.com>
-Date: Fri, 3 Jun 2016 09:37:03 -0600
-Subject: [PATCH] Support libarchive 3.2 version string format
-
----
- Modules/FindLibArchive.cmake | 9 +++++----
- 1 file changed, 5 insertions(+), 4 deletions(-)
-
-diff --git a/Modules/FindLibArchive.cmake b/Modules/FindLibArchive.cmake
-index 471a4f1..dd93041 100644
---- a/Modules/FindLibArchive.cmake
-+++ b/Modules/FindLibArchive.cmake
-@@ -42,14 +42,15 @@ mark_as_advanced(LibArchive_INCLUDE_DIR LibArchive_LIBRARY)
- 
- # Extract the version number from the header.
- if(LibArchive_INCLUDE_DIR AND EXISTS "${LibArchive_INCLUDE_DIR}/archive.h")
--  # The version string appears in one of two known formats in the header:
-+  # The version string appears in one of three known formats in the header:
-   #  #define ARCHIVE_LIBRARY_VERSION "libarchive 2.4.12"
-   #  #define ARCHIVE_VERSION_STRING "libarchive 2.8.4"
--  # Match either format.
--  set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"libarchive +([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
-+  #  #define ARCHIVE_VERSION_ONLY_STRING "3.2.0"
-+  # Match any format.
-+  set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"(libarchive +)?([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
-   file(STRINGS "${LibArchive_INCLUDE_DIR}/archive.h" _LibArchive_VERSION_STRING LIMIT_COUNT 1 REGEX "${_LibArchive_VERSION_REGEX}")
-   if(_LibArchive_VERSION_STRING)
--    string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\1.\\2.\\3" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
-+    string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\2.\\3.\\4" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
-   endif()
-   unset(_LibArchive_VERSION_REGEX)
-   unset(_LibArchive_VERSION_STRING)
--- 
-1.8.3.1
-
diff --git a/cmake.spec b/cmake.spec
index 919f719..7107935 100644
--- a/cmake.spec
+++ b/cmake.spec
@@ -33,15 +33,15 @@
 %{!?_pkgdocdir:%global _pkgdocdir %{_docdir}/%{name}-%{version}}
 
 # Set to RC version if building RC, else %{nil}
-%global rcver %{nil}
+%global rcver rc4
 
 # Uncomment if building for EPEL
 #global name_suffix 3
 %global orig_name cmake
 
 Name:           %{orig_name}%{?name_suffix}
-Version:        3.5.2
-Release:        3%{?dist}
+Version:        3.6.0
+Release:        0.1.%{rcver}%{?dist}
 Summary:        Cross-platform make system
 
 # most sources are BSD
@@ -51,7 +51,7 @@ Summary:        Cross-platform make system
 # exception granting redistribution under terms of your choice
 License:        BSD and MIT and zlib
 URL:            http://www.cmake.org
-Source0:        http://www.cmake.org/files/v3.5/%{orig_name}-%{version}%{?rcver}.tar.gz
+Source0:        http://www.cmake.org/files/v3.6/%{orig_name}-%{version}%{?rcver:-%rcver}.tar.gz
 Source1:        %{name}-init.el
 Source2:        macros.%{name}
 # See https://bugzilla.redhat.com/show_bug.cgi?id=1202899
@@ -64,8 +64,6 @@ Source4:        %{name}.prov
 Patch2:         %{name}-findruby.patch
 # replace release flag -O3 with -O2 for fedora
 Patch3:         %{name}-fedora-flag_release.patch
-# Support libarchive 3.2
-Patch4:         %{name}-libarchive.patch
 
 # Patch for renaming on EPEL
 %if 0%{?name_suffix:1}
@@ -161,7 +159,7 @@ The %{name}-gui package contains the Qt based GUI for %{name}.
 
 
 %prep
-%setup -qn %{orig_name}-%{version}%{?rcver}
+%setup -qn %{orig_name}-%{version}%{?rcver:-%rcver}
 
 # Apply renaming on EPEL before all other patches
 %if 0%{?name_suffix:1}
@@ -174,7 +172,6 @@ The %{name}-gui package contains the Qt based GUI for %{name}.
 # We cannot use backups with patches to Modules as they end up being installed
 %patch2 -p1
 %patch3 -p1
-%patch4 -p1
 
 %if %{with python3}
 echo '#!%{__python3}' > %{name}.prov
@@ -384,6 +381,9 @@ update-mime-database %{?fedora:-n} %{_datadir}/mime &> /dev/null || :
 
 
 %changelog
+* Wed Jun 29 2016 Orion Poplawski <orion@cora.nwra.com> - 3.6.0-0.1.rc4
+- Update to 3.6.0-rc4
+
 * Fri Jun 03 2016 Orion Poplawski <orion@cora.nwra.com> - 3.5.2-3
 - Add patch to support libarchive 3.2
 
diff --git a/sources b/sources
index 2266553..dbccc3e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-701386a1b5ec95f8d1075ecf96383e02  cmake-3.5.2.tar.gz
+3d536da4117f84e315c1d3e3521a2501  cmake-3.6.0-rc4.tar.gz