diff --git a/.gitignore b/.gitignore
index 9ea905e..b5424a5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,3 +45,4 @@
 /MCE-1.833.tar.gz
 /MCE-1.834.tar.gz
 /MCE-1.835.tar.gz
+/MCE-1.836.tar.gz
diff --git a/perl-MCE.spec b/perl-MCE.spec
index 6829713..d5e03e9 100644
--- a/perl-MCE.spec
+++ b/perl-MCE.spec
@@ -1,5 +1,5 @@
 Name:           perl-MCE
-Version:        1.835
+Version:        1.836
 Release:        1%{?dist}
 Summary:        Many-core Engine for Perl providing parallel processing capabilities
 License:        GPL+ or Artistic
@@ -152,6 +152,11 @@ make test
 %{_bindir}/mce_zfgrep
 
 %changelog
+* Tue Jun 26 2018 Paul Howarth <paul@city-fan.org> - 1.836-1
+- Update to 1.836
+  - Moved validation code from MCE::Util to MCE::Core::Validation
+  - Applied small optimizations
+
 * Wed Mar 14 2018 Paul Howarth <paul@city-fan.org> - 1.835-1
 - Update to 1.835
   - Added gather and relay demonstrations to MCE::Relay
diff --git a/sources b/sources
index 7836041..89c366e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (MCE-1.835.tar.gz) = b1bd7b36ca6e4e43584ccc8e50c05bc7ce1cb5088405ed34bbdaae31b55848a4665c9506f7a3119a376045f4b2612904ed1c940e6942580d47f70fbcbe66b9d8
+SHA512 (MCE-1.836.tar.gz) = 6d6964df29e6c806413b4b7fe5b8f508c8d5c30602b27b7ab21db7f130c1e3d68fbc7fbae0808d94998d731e2400b445d569f33fdf8bbe5ff4e0d8aaaafa5cb7