diff -Nru libotr-3.2.0/debian/changelog libotr-3.2.0/debian/changelog
--- libotr-3.2.0/debian/changelog	2012-08-14 19:26:17.000000000 +0200
+++ libotr-3.2.0/debian/changelog	2014-01-04 13:27:03.000000000 +0100
@@ -1,3 +1,11 @@
+libotr (3.2.0-4ubuntu0.2) precise-security; urgency=low
+
+  * SECURITY UPDATE: disable insecure OTRv1 protocol to prevent downgrade
+    attacks (LP: #1266016)
+    - Add disable_otr_v1.patch, patch taken from Debian
+
+ -- Felix Geyer <debfx@ubuntu.com>  Sat, 04 Jan 2014 13:22:42 +0100
+
 libotr (3.2.0-4ubuntu0.1) precise-security; urgency=low
 
   * SECURITY UPDATE: multiple heap-based buffer overflows (LP: #1034623)
diff -Nru libotr-3.2.0/debian/patches/disable_otr_v1.patch libotr-3.2.0/debian/patches/disable_otr_v1.patch
--- libotr-3.2.0/debian/patches/disable_otr_v1.patch	1970-01-01 01:00:00.000000000 +0100
+++ libotr-3.2.0/debian/patches/disable_otr_v1.patch	2014-01-04 13:22:25.000000000 +0100
@@ -0,0 +1,39 @@
+Author: Rob Smits <rdfsmits@cs.uwaterloo.ca>
+Date: Sun Jun 3 22:38:05 2012 -0400
+Subject: Disable OTRv1 protocol.
+Origin: http://sourceforge.net/p/otr/libotr/ci/7ffba65fa42052795523924279bc94e7c80fb0f7/
+Bug: http://bugs.debian.org/725779
+Forwarded: not-needed
+Reviewed-by: intrigeri <intrigeri@debian.org>
+Last-Update: Sun Dec 22 11:30:00 2013 +0100
+Applied-Upstream: 4.0.0
+
+diff --git a/src/proto.h b/src/proto.h
+index d7b0ae6..e96e2f2 100644
+--- a/src/proto.h
++++ b/src/proto.h
+@@ -45,20 +45,17 @@ typedef unsigned int OtrlPolicy;
+ 
+ #define OTRL_POLICY_VERSION_MASK (OTRL_POLICY_ALLOW_V1 | OTRL_POLICY_ALLOW_V2)
+ 
+-/* For v1 compatibility */
++/* Analogous to v1 policies */
+ #define OTRL_POLICY_NEVER			0x00
+ #define OTRL_POLICY_OPPORTUNISTIC \
+-	    ( OTRL_POLICY_ALLOW_V1 | \
+-	    OTRL_POLICY_ALLOW_V2 | \
++	    ( OTRL_POLICY_ALLOW_V2 | \
+ 	    OTRL_POLICY_SEND_WHITESPACE_TAG | \
+ 	    OTRL_POLICY_WHITESPACE_START_AKE | \
+ 	    OTRL_POLICY_ERROR_START_AKE )
+ #define OTRL_POLICY_MANUAL \
+-	    ( OTRL_POLICY_ALLOW_V1 | \
+-	    OTRL_POLICY_ALLOW_V2 )
++	    ( OTRL_POLICY_ALLOW_V2 )
+ #define OTRL_POLICY_ALWAYS \
+-	    ( OTRL_POLICY_ALLOW_V1 | \
+-	    OTRL_POLICY_ALLOW_V2 | \
++	    ( OTRL_POLICY_ALLOW_V2 | \
+ 	    OTRL_POLICY_REQUIRE_ENCRYPTION | \
+ 	    OTRL_POLICY_WHITESPACE_START_AKE | \
+ 	    OTRL_POLICY_ERROR_START_AKE )
diff -Nru libotr-3.2.0/debian/patches/series libotr-3.2.0/debian/patches/series
--- libotr-3.2.0/debian/patches/series	2012-08-14 19:26:17.000000000 +0200
+++ libotr-3.2.0/debian/patches/series	2014-01-04 13:22:37.000000000 +0100
@@ -1,3 +1,4 @@
 0001-Use-ceil-instead-of-floor-to-compute-the-size-of-the.patch
 0002-More-thorough-base64-fix.patch
 0003-One-more-otrl_base64_decode-in-the-toolkit.patch
+disable_otr_v1.patch