diff --git a/ChangeLog b/ChangeLog
index c958777..aa8de4e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Version 4.1.2
+=============
+ * Fix buffer overflow bug in the swift reading code (thanks Alistair).
+
 Version 4.1.1
 =============
  * Fix bad version numbering of installed libwandder.so
diff --git a/README b/README
index 188a20c..b778cac 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-WANDIO 4.1.1
+WANDIO 4.1.2
 
 ---------------------------------------------------------------------------
 Copyright (c) 2007-2019 The University of Waikato, Hamilton, New Zealand.
diff --git a/configure.ac b/configure.ac
index 231211b..ae9d764 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,11 +3,11 @@
 # Now you only need to update the version number in two places - below,
 # and in the README
 
-AC_INIT([wandio],[4.1.1],[contact@wand.net.nz],[wandio])
+AC_INIT([wandio],[4.1.2],[contact@wand.net.nz],[wandio])
 
 WANDIO_MAJOR=4
 WANDIO_MID=1
-WANDIO_MINOR=1
+WANDIO_MINOR=2
 
 # OpenSolaris hides libraries like libncurses in /usr/gnu/lib, which is not
 # searched by default - add it to LDFLAGS so we at least have a chance of
diff --git a/debian/changelog b/debian/changelog
index b6d349d..3fba6fb 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+libwandio1 (4.1.2-1) unstable; urgency=medium
+
+  * Fix swift buffer overflow bug
+
+ -- Shane Alcock <salcock@waikato.ac.nz>  Wed, 06 Mar 2019 13:07:02 +1300
+
 libwandio1 (4.1.1-1) unstable; urgency=medium
 
   * Fix bad version number for installed .so
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 7b035ad..16bb1bc 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -73,5 +73,5 @@ libwandio_la_SOURCES=wandio.c ior-peek.c ior-stdio.c ior-thread.c \
 
 AM_CPPFLAGS = @ADD_INCLS@
 libwandio_la_LIBADD = @LIBWANDIO_LIBS@
-libwandio_la_LDFLAGS=-version-info 5:1:1 @ADD_LDFLAGS@
+libwandio_la_LDFLAGS=-version-info 5:2:1 @ADD_LDFLAGS@
 
diff --git a/rpm/libwandio1.spec b/rpm/libwandio1.spec
index 48174fc..7089115 100644
--- a/rpm/libwandio1.spec
+++ b/rpm/libwandio1.spec
@@ -1,5 +1,5 @@
 Name:           libwandio1
-Version:        4.1.1
+Version:        4.1.2
 Release:        1%{?dist}
 Summary:        C Multi-Threaded File Compression and Decompression Library