diff --git a/.gitignore b/.gitignore
index 3dfb63f..e17a3b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,4 @@
 /MCE-1.862.tar.gz
 /MCE-1.863.tar.gz
 /MCE-1.864.tar.gz
+/MCE-1.865.tar.gz
diff --git a/perl-MCE.spec b/perl-MCE.spec
index fc7ccdd..6c8f688 100644
--- a/perl-MCE.spec
+++ b/perl-MCE.spec
@@ -1,5 +1,5 @@
 Name:           perl-MCE
-Version:        1.864
+Version:        1.865
 Release:        1%{?dist}
 Summary:        Many-core Engine for Perl providing parallel processing capabilities
 License:        GPL+ or Artistic
@@ -171,10 +171,19 @@ make test
 %{_bindir}/mce_zfgrep
 
 %changelog
+* Thu Dec 26 2019 Paul Howarth <paul@city-fan.org> - 1.865-1
+- Update to 1.865
+  - Bug fix for two-way IPC stalling on Windows in MCE::Channel::Threads:
+    see https://www.perlmonks.org/?node_id=11110612
+  - Remove the check for MSWin32 in MCE::Channel::Mutex; MCE::Channel since
+    the 1st release silently defaults to MCE::Channel::Threads on Windows
+  - Small tweak to MCE::Signal
+
 * Wed Dec  4 2019 Paul Howarth <paul@city-fan.org> - 1.864-1
 - Update to 1.864
   - Bug fix to MCE::Signal - Shared manager not exiting, introduced in 1.863
-  - Use monotonic clock if available in MCE->yield and MCE::Child->yield
+  - Use monotonic clock if available in MCE->yield and MCE::Child->yield:
+    see https://www.perlmonks.org/?node_id=11109673
 
 * Mon Nov 25 2019 Paul Howarth <paul@city-fan.org> - 1.863-1
 - Update to 1.863
diff --git a/sources b/sources
index 1d55d33..494c7a4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (MCE-1.864.tar.gz) = f4a26ff3d07ac7263335f150a76d00dd2f09ebe5b6b5ce5e311bd2a770d1adaeb9360bba67410b259502a66103417080828d9fd3e22afe952143d58ba86fdb08
+SHA512 (MCE-1.865.tar.gz) = ed8106ba0f61f489ddea8ef7ed724907b1be474e252081888623cbbbffe843815478632a8434a70f60c667b569c5019fbda784a28d06f262df10f69269cb6695