diff --git a/.gitignore b/.gitignore
index 7077035..ddde595 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /jose-9.tar.bz2
 /jose-10.tar.bz2
 /jose-11.tar.xz
+/jose-12.tar.xz
diff --git a/jose.spec b/jose.spec
index 38482e8..338ed06 100644
--- a/jose.spec
+++ b/jose.spec
@@ -1,5 +1,5 @@
 Name:           jose
-Version:        11
+Version:        12
 Release:        %autorelease
 Summary:        Tools for JSON Object Signing and Encryption (JOSE)
 
@@ -7,9 +7,6 @@ License:        Apache-2.0
 URL:            https://github.com/latchset/%{name}
 Source0:        https://github.com/latchset/%{name}/releases/download/v%{version}/%{name}-%{version}.tar.xz
 
-# Backport from https://github.com/latchset/jose/pull/143
-Patch:          143.patch
-
 BuildRequires:  gcc
 BuildRequires:  pkgconfig
 BuildRequires:  jansson-devel >= 2.10
diff --git a/sources b/sources
index b73042f..aeb785f 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (jose-11.tar.xz) = 61aa7aad85694e693f451e328e81dc7d84d4bd7662152213f1ef45fd010db7180a93d67398888fc9476ee04e4eb7dd7483cfcebc47d5773cfe04b8b5f3786006
+SHA512 (jose-12.tar.xz) = 318308b7b82f669efb2b73652a5d2f98902a4ccf04e7db366a73777c59d8ec9866e047aa210e1e220e5e717e86a2a303931d81dab03070901e3e703f478b265b