diff --git a/Formula/s/sile.rb b/Formula/s/sile.rb
index c0d7774f006e3..d7c23dd0fbe11 100644
--- a/Formula/s/sile.rb
+++ b/Formula/s/sile.rb
@@ -1,51 +1,38 @@
 class Sile < Formula
   desc "Modern typesetting system inspired by TeX"
   homepage "https://sile-typesetter.org"
+  url "https://github.com/sile-typesetter/sile/releases/download/v0.15.3/sile-0.15.3.tar.zst"
+  sha256 "88d24a70710e301ba3400351a82c5f28b49cebcd637b7a59d28b001a56b398c6"
   license "MIT"
-  revision 1
-
-  # TODO: With 0.15 release:
-  # - Remove `cosmo` resource and corresponding references in install
-  # - Switch `lua` dependency to `luajit` and clean up `lua` references
-  stable do
-    url "https://github.com/sile-typesetter/sile/releases/download/v0.14.17/sile-0.14.17.tar.xz"
-    sha256 "7f89bedecedabb5168250ad9dd80c09ed289c8e88c3d0d756d2d1d92ee065e04"
-
-    depends_on "lua"
-  end
 
   bottle do
-    sha256 cellar: :any,                 arm64_sonoma:   "74bee659db3d23a9b2ab54e30d0fad09f19d02fc035987db06219c9c363a4d1f"
-    sha256 cellar: :any,                 arm64_ventura:  "68e0846baebd4fa1d78da92c25f9924a805fde515c844cd1f77db75710568151"
-    sha256 cellar: :any,                 arm64_monterey: "156067d6a65fed6a0543026b924998f3d73ec95cb72388b83e925286206c6785"
-    sha256 cellar: :any,                 sonoma:         "909940767d0810a28b3ea1d705a6bb120d04dd544a10e0e86f97809009ccfa0b"
-    sha256 cellar: :any,                 ventura:        "8ef384866a339dcf0c9c362bca28808e7852b45fca87a3d85e86ad26769526e9"
-    sha256 cellar: :any,                 monterey:       "877ee8ebca792e0b199d05c85bc901515bec45aff0d02a05aa8f4fd37e9d7ad4"
-    sha256 cellar: :any_skip_relocation, x86_64_linux:   "46bcd748249ed2c5a45159c55d2f5133ce630a57f7fc080c9f729f4ead3d13e2"
+    sha256 cellar: :any,                 arm64_sonoma:   "0450780ce9fe84b4bdfad21d3142176e9d29db3885911845f212a142e4a267f3"
+    sha256 cellar: :any,                 arm64_ventura:  "80bc45a5ee156f1f7c1185bd47c61fc7b60a8c08f6909c5c5698847f0d7c39e5"
+    sha256 cellar: :any,                 arm64_monterey: "fbea588d0203b96407d23374f2774fb9c4e324453eeb6abf5c66725abd9e4a51"
+    sha256 cellar: :any,                 sonoma:         "77db58362c81fb602a4a9131be488284f73d0eb9409f50d7af03c48d0ae20afd"
+    sha256 cellar: :any,                 ventura:        "7b8d448f5c1d98a4e9e28aebe7dc82ffc5ddbe7fca1ccba3403c8bec5bd8176d"
+    sha256 cellar: :any,                 monterey:       "6fe29599172792c630212ef8ba5c2124daf44aee5232215be8e89ec05fc71830"
+    sha256 cellar: :any_skip_relocation, x86_64_linux:   "8bde53dfab23c1700c271e04edbdef32a2a61067504f4421212089364bd09eb4"
   end
 
   head do
-    url "https://github.com/sile-typesetter/sile.git", branch: "develop"
+    url "https://github.com/sile-typesetter/sile.git"
 
     depends_on "autoconf" => :build
     depends_on "automake" => :build
-    depends_on "jq" => :build
     depends_on "libtool" => :build
-    depends_on "poppler" => :build
-    depends_on "rust" => :build
-    depends_on "luajit"
-
-    resource "compat53" do
-      url "https://luarocks.org/manifests/lunarmodules/compat53-0.12-1.rockspec"
-      sha256 "880cdad8d1789a0756f2023d2c98f36d94e6d2c1cc507190b4f9883420435746"
-    end
   end
 
+  depends_on "jq" => :build
   depends_on "pkg-config" => :build
+  depends_on "poppler" => :build
+  depends_on "rust" => :build
+
   depends_on "fontconfig"
   depends_on "harfbuzz"
   depends_on "icu4c"
   depends_on "libpng"
+  depends_on "luajit"
   depends_on "luarocks"
   depends_on "openssl@3"
 
@@ -53,6 +40,15 @@ class Sile < Formula
   uses_from_macos "expat"
   uses_from_macos "zlib"
 
+  on_macos do
+    depends_on "freetype"
+  end
+
+  resource "compat53" do
+    url "https://luarocks.org/manifests/lunarmodules/compat53-0.12-1.rockspec"
+    sha256 "880cdad8d1789a0756f2023d2c98f36d94e6d2c1cc507190b4f9883420435746"
+  end
+
   resource "linenoise" do
     url "https://luarocks.org/manifests/hoelzro/linenoise-0.9-1.rockspec"
     sha256 "e4f942e0079092993832cf6e78a1f019dad5d8d659b9506692d718d0c0432c72"
@@ -63,12 +59,6 @@ class Sile < Formula
     sha256 "6637fcf4d3ddef7be490a2f0155bd2dcd053272d1bb78c015498709ef9fa75dd"
   end
 
-  # depends on lpeg
-  resource "cosmo" do
-    url "https://luarocks.org/manifests/mascarenhas/cosmo-16.06.04-1.src.rock"
-    sha256 "9c83d50c8b734c0d405f97df9940ddb27578214033fd0e3cfc3e7420c999b9a9"
-  end
-
   resource "loadkit" do
     url "https://luarocks.org/manifests/leafo/loadkit-1.1.0-1.src.rock"
     sha256 "6a631cb08a78324cb5f92b1cb8e2f59502d7113407d0d9b0d95045d8a4febccb"
@@ -153,15 +143,8 @@ class Sile < Formula
   end
 
   def install
-    if build.head?
-      lua = Formula["luajit"]
-      luaversion = "5.1"
-      luainclude = lua.opt_include/"luajit-2.1"
-    else
-      lua = Formula["lua"]
-      luaversion = lua.version.major_minor
-      luainclude = lua.opt_include/"lua"
-    end
+    lua = Formula["luajit"]
+    luaversion = "5.1"
     luapath = libexec/"vendor"
 
     paths = %W[
@@ -173,7 +156,7 @@ def install
     ENV["LUA_PATH"] = paths.join(";")
     ENV["LUA_CPATH"] = "#{luapath}/lib/lua/#{luaversion}/?.so"
 
-    ENV.prepend "CPPFLAGS", "-I#{luainclude}"
+    ENV.prepend "CPPFLAGS", "-I#{lua.opt_include}/luajit-2.1"
     ENV.prepend "LDFLAGS", "-L#{lua.opt_lib}"
 
     if OS.mac?
@@ -183,7 +166,7 @@ def install
       expat_dir = Formula["expat"].opt_prefix
     end
 
-    args = %W[
+    luarocks_args = %W[
       ZLIB_DIR=#{zlib_dir}
       EXPAT_DIR=#{expat_dir}
       OPENSSL_DIR=#{Formula["openssl@3"].opt_prefix}
@@ -192,28 +175,31 @@ def install
     ]
 
     resources.each do |r|
-      # TODO: Remove this line when `cosmo` resource is removed
-      next if r.name == "cosmo" && build.head?
-
       r.stage do
         rock = Pathname.pwd.children(false).first
         unpack_dir = Utils.safe_popen_read("luarocks", "unpack", rock).split("\n")[-2]
 
         spec = "#{r.name}-#{r.version}.rockspec"
-        cd(unpack_dir) { system "luarocks", "make", *args, spec }
+        cd(unpack_dir) { system "luarocks", "make", *luarocks_args, spec }
       end
     end
 
-    args = %w[
+    configure_args = %w[
       FCMATCH=true
       --disable-silent-rules
       --with-system-luarocks
+      --with-system-lua-sources
+      --disable-embeded-resources
     ]
-    if build.head?
-      args += %w[--with-system-lua-sources --disable-embeded-resources]
-      system "./bootstrap.sh"
-    end
-    system "./configure", *args, *std_configure_args
+
+    # Upstream bug https://github.com/sile-typesetter/sile/issues/2078 triggers
+    # a useless automake cycle when building from the source tarball. This
+    # argument avoids needing the dependency by just making it a noop. Remove
+    # on the next release.
+    configure_args += %w[AUTOMAKE=:]
+
+    system "./bootstrap.sh" if build.head?
+    system "./configure", *configure_args, *std_configure_args
     system "make"
     system "make", "install"