diff --git a/.cirrus.yml b/.cirrus.yml
index bd8901c..12439a6 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -77,7 +77,7 @@ rocky_task:
 task:
   name: freebsd
   freebsd_instance:
-    image_family: freebsd-15-0-snap
+    image_family: freebsd-14-3
 
   pkginstall_script:
     - IGNORE_OSVERSION=yes pkg update -f
diff --git a/NEWS.md b/NEWS.md
index 0044669..69aa135 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,18 @@
+Release 1.6.5: 9th December 2025
+--------------------------------
+
+This is a bug fix release.
+
+Bug fixes
+
+- Add cpuid checks for XSAVE, OSXSAVE and AVX.  Corrects auto-detection of
+  SIMD version on machines that have but disable specific CPU features.
+  (PR #140 Robert Davies, fixes samtools/samtools#2256 Ran Fan).
+
+- Avoid undefined behaviour by replacing literal copies with memcpy
+  (PR #142 James Bonfield, fixes Issue #141 Vasudeva Easwara Sarma)
+
+
 Release 1.6.4: 9th July 2025
 ----------------------------
 
diff --git a/configure.ac b/configure.ac
index d196169..082783a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT(htscodecs, 1.6.4)
+AC_INIT(htscodecs, 1.6.5)
 
 # Some functions benefit from -O3 optimisation, so if the user didn't
 # explicitly set any compiler flags, we'll plump for O3.
@@ -61,7 +61,7 @@ AM_EXTRA_RECURSIVE_TARGETS([fuzz])
 #       libhtscodecs.so.1.1.0
 
 VERS_CURRENT=3
-VERS_REVISION=9
+VERS_REVISION=10
 VERS_AGE=1
 AC_SUBST(VERS_CURRENT)
 AC_SUBST(VERS_REVISION)
diff --git a/htscodecs/htscodecs.h b/htscodecs/htscodecs.h
index 2b1985d..dfce5c1 100644
--- a/htscodecs/htscodecs.h
+++ b/htscodecs/htscodecs.h
@@ -43,7 +43,7 @@
  * Note currently this needs manually editing as it isn't automatically
  * updated by autoconf.
  */
-#define HTSCODECS_VERSION 100604
+#define HTSCODECS_VERSION 100605
 
 /*
  * A const string form of the HTSCODECS_VERSION define.