diff --git a/CHANGELOG.md b/CHANGELOG.md
index c75f7d9..4548564 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,13 @@
 This document contains details of the various releases and their release dates.
 Dates are in the format `yyyy-mm-dd`.
 
+## 2.12 - 2017-12-29
+
+Element start tags containing other start tags (e.g. `<script<script>`) are now
+parser correctly.
+
+See f574197ea657cf09405336ca618a22e32c94d0d0 for more information.
+
 ## 2.11 - 2017-09-07
 
 Various Ruby warnings have been resolved by Loic Nageleisen. See pull request
diff --git a/checksum/oga-2.12-java.gem.sha512 b/checksum/oga-2.12-java.gem.sha512
new file mode 100644
index 0000000..5dd1224
--- /dev/null
+++ b/checksum/oga-2.12-java.gem.sha512
@@ -0,0 +1 @@
+5389228f4c92851e74396e507c37b0fbe8659522fad0932954a710640268cd51926185b0d4c7887b6d5c13f11af0dbde45fb43d0dd1adce5d8688f050d2de1ed
\ No newline at end of file
diff --git a/checksum/oga-2.12.gem.sha512 b/checksum/oga-2.12.gem.sha512
new file mode 100644
index 0000000..9f96f28
--- /dev/null
+++ b/checksum/oga-2.12.gem.sha512
@@ -0,0 +1 @@
+ab7a64c63bf2f03ecfe42f45199c943d60240eed0ee57f71e1d05fe8d29264c942f12bba8c34d3e3c22f4cb502611d3c65bda17a8c4afec9a593599537c143b6
\ No newline at end of file
diff --git a/lib/oga/version.rb b/lib/oga/version.rb
index 6464faa..e9a5472 100644
--- a/lib/oga/version.rb
+++ b/lib/oga/version.rb
@@ -1,3 +1,3 @@
 module Oga
-  VERSION = '2.11'
+  VERSION = '2.12'
 end # Oga