diff --git a/README.md b/README.md
index 68e4993..ec1888a 100644
--- a/README.md
+++ b/README.md
@@ -186,6 +186,16 @@ See LICENSE file.
 
 ## History
 
+### v0.28 (May 06 2015)
+  - Switched to a method proposed by @SoniEx2 to disallow function calls (#15).
+  - Added more `tostring` for Lua 5.3 support (pkulchenko/ZeroBraneStudio#401).
+  - Updated environment handling to localize the impact (#15).
+  - Added setting env to protect against assigning global functions (closes #15).
+  - Updated tests to work with Lua 5.3.
+  - Added explicit `tostring` for Lua 5.3 with `LUA_NOCVTN2S` set (pkulchenko/ZeroBraneStudio#401).
+  - Fixed crash when not all Lua standard libraries are loaded (thanks to Tommy Nguyen).
+  - Improved Lua 5.2 support for serialized functions.
+
 ### v0.27 (Jan 11 2014)
   - Fixed order of elements in the array part with `sortkeys=true` (fixes #13).
   - Updated custom formatter documentation (closes #11).
diff --git a/misc/serpent-0.28-1.rockspec b/misc/serpent-0.28-1.rockspec
new file mode 100644
index 0000000..2e23cd4
--- /dev/null
+++ b/misc/serpent-0.28-1.rockspec
@@ -0,0 +1,25 @@
+package = "serpent"
+version = "0.28-1"
+source = {
+  url = "git://github.com/pkulchenko/serpent.git",
+  tag = "0.28"
+}
+
+description = {
+  summary = "Lua serializer and pretty printer",
+  homepage = "https://github.com/pkulchenko/serpent",
+  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
+  license = "MIT",
+}
+
+dependencies = {
+  "lua >= 5.1, < 5.4",
+}
+
+build = {
+  type = "builtin",
+  modules = {
+    ["serpent"] = "src/serpent.lua",
+  },
+  copy_directories = { "t" },
+}