diff --git a/cassowary-scm-0.rockspec b/cassowary-scm-0.rockspec
index 7263055..a8278ca 100644
--- a/cassowary-scm-0.rockspec
+++ b/cassowary-scm-0.rockspec
@@ -1,23 +1,25 @@
-package = "Cassowary"
+rockspec_format = "3.0"
+package = "cassowary"
 version = "scm-0"
 
 source = {
    url = "git://github.com/sile-typesetter/cassowary.lua",
+   branch = "master"
 }
 
 description = {
-   summary = "The cassowary constraint solver.",
-   detailed = [[
-      This is a lua port of the cassowary constraint solving toolkit.
-      It allows you to use lua to solve algebraic equations and inequalities
-      and find the values of unknown variables which satisfy those inequalities.
-   ]],
+   summary = "The cassowary constraint solver",
+   detailed = [[This is a Lua port of the Cassowary constraint solving toolkit.
+      It allows you to use Lua to solve algebraic equations and inequalities
+      and find the values of unknown variables which satisfy those
+      inequalities.]],
+   license = "Apache 2",
    homepage = "https://github.com/sile-typesetter/cassowary.lua",
-   license = "Apache 2"
+   issues_url = "https://github.com/sile-typesetter/cassowary.lua/issues"
 }
 
 dependencies = {
-   "lua",
+   "lua >= 5.1",
    "penlight"
 }
 
diff --git a/rockspecs/cassowary-1.0-1.rockspec b/rockspecs/cassowary-1.0-1.rockspec
new file mode 100644
index 0000000..dde379b
--- /dev/null
+++ b/rockspecs/cassowary-1.0-1.rockspec
@@ -0,0 +1,26 @@
+package = "Cassowary"
+version = "1.0-1"
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+   tag = "v1.0",
+}
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+dependencies = {
+   "lua ~> 5.1";
+   "stdlib"
+}
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua/cassowary.lua"
+   }
+}
diff --git a/rockspecs/cassowary-1.0-2.rockspec b/rockspecs/cassowary-1.0-2.rockspec
new file mode 100644
index 0000000..5366d58
--- /dev/null
+++ b/rockspecs/cassowary-1.0-2.rockspec
@@ -0,0 +1,26 @@
+package = "Cassowary"
+version = "1.0-2"
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+   tag = "v1.0",
+}
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+dependencies = {
+   "lua";
+   "stdlib"
+}
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua/cassowary.lua"
+   }
+}
diff --git a/rockspecs/cassowary-1.1-1.rockspec b/rockspecs/cassowary-1.1-1.rockspec
new file mode 100644
index 0000000..d206187
--- /dev/null
+++ b/rockspecs/cassowary-1.1-1.rockspec
@@ -0,0 +1,26 @@
+package = "Cassowary"
+version = "1.1-1"
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+   tag = "v1.1",
+}
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+dependencies = {
+   "lua";
+   "stdlib"
+}
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua/cassowary.lua"
+   }
+}
diff --git a/rockspecs/cassowary-2.0-1.rockspec b/rockspecs/cassowary-2.0-1.rockspec
new file mode 100644
index 0000000..a39e776
--- /dev/null
+++ b/rockspecs/cassowary-2.0-1.rockspec
@@ -0,0 +1,26 @@
+package = "Cassowary"
+version = "2.0-1"
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+   tag = "v2.0",
+}
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+dependencies = {
+   "lua";
+   "penlight"
+}
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua/cassowary.lua"
+   }
+}
\ No newline at end of file
diff --git a/rockspecs/cassowary-2.1-1.rockspec b/rockspecs/cassowary-2.1-1.rockspec
new file mode 100644
index 0000000..ba2ea7d
--- /dev/null
+++ b/rockspecs/cassowary-2.1-1.rockspec
@@ -0,0 +1,26 @@
+package = "Cassowary"
+version = "2.1-1"
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+   tag = "v2.1",
+}
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+dependencies = {
+   "lua";
+   "penlight"
+}
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua/cassowary.lua"
+   }
+}
diff --git a/rockspecs/cassowary-2.2-0.rockspec b/rockspecs/cassowary-2.2-0.rockspec
new file mode 100644
index 0000000..2df5baf
--- /dev/null
+++ b/rockspecs/cassowary-2.2-0.rockspec
@@ -0,0 +1,29 @@
+package = "Cassowary"
+version = "2.2-0"
+
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+}
+
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+
+dependencies = {
+   "lua",
+   "penlight"
+}
+
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua"
+   }
+}
diff --git a/rockspecs/cassowary-2.2-1.rockspec b/rockspecs/cassowary-2.2-1.rockspec
new file mode 100644
index 0000000..d3cb555
--- /dev/null
+++ b/rockspecs/cassowary-2.2-1.rockspec
@@ -0,0 +1,30 @@
+package = "Cassowary"
+version = "2.2-1"
+
+source = {
+   url = "git://github.com/simoncozens/cassowary.lua",
+   dir = "cassowary.lua"
+}
+
+description = {
+   summary = "The cassowary constraint solver.",
+   detailed = [[
+      This is a lua port of the cassowary constraint solving toolkit. 
+      It allows you to use lua to solve algebraic equations and inequalities 
+      and find the values of unknown variables which satisfy those inequalities.
+   ]],
+   homepage = "https://github.com/simoncozens/cassowary.lua",
+   license = "Apache 2"
+}
+
+dependencies = {
+   "lua",
+   "penlight"
+}
+
+build = {
+   type = "builtin",
+   modules = {
+      cassowary = "cassowary.lua"
+   }
+}