diff --git a/Aliases/ghc@9.10 b/Aliases/ghc@9.12
similarity index 100%
rename from Aliases/ghc@9.10
rename to Aliases/ghc@9.12
diff --git a/Formula/g/ghc.rb b/Formula/g/ghc.rb
index 9c100c1a0f53b..2652aef49e55f 100644
--- a/Formula/g/ghc.rb
+++ b/Formula/g/ghc.rb
@@ -1,6 +1,8 @@
 class Ghc < Formula
   desc "Glorious Glasgow Haskell Compilation System"
   homepage "https://haskell.org/ghc/"
+  url "https://downloads.haskell.org/~ghc/9.12.1/ghc-9.12.1-src.tar.xz"
+  sha256 "4a7410bdeec70f75717087b8f94bf5a6598fd61b3a0e1f8501d8f10be1492754"
   # We build bundled copies of libffi and GMP so GHC inherits the licenses
   license all_of: [
     "BSD-3-Clause",
@@ -9,17 +11,6 @@ class Ghc < Formula
   ]
   head "https://gitlab.haskell.org/ghc/ghc.git", branch: "master"
 
-  stable do
-    url "https://downloads.haskell.org/~ghc/9.10.1/ghc-9.10.1-src.tar.xz"
-    sha256 "bf386a302d4ee054791ffd51748900f15d71760fd199157922d120cc1f89e2f7"
-
-    # Backport fix to avoid unnecessary `alex` dependency
-    patch do
-      url "https://gitlab.haskell.org/ghc/ghc/-/commit/aba2c9d4728262cd9a2d711eded9050ac131c6c1.diff"
-      sha256 "152cd2711a7e103bbf0526dc62e51b437e6c60e26149f2cd50ccafaa057316ce"
-    end
-  end
-
   livecheck do
     url "https://www.haskell.org/ghc/download.html"
     regex(/href=.*?download[._-]ghc[._-][^"' >]+?\.html[^>]*?>\s*?v?(\d+(?:\.\d+)+)\s*?</i)
@@ -39,7 +30,7 @@ class Ghc < Formula
 
   depends_on "autoconf" => :build
   depends_on "automake" => :build
-  depends_on "python@3.12" => :build
+  depends_on "python@3.13" => :build
   depends_on "sphinx-doc" => :build
   depends_on "xz" => :build
 
@@ -59,22 +50,22 @@ class Ghc < Formula
   resource "binary" do
     on_macos do
       on_arm do
-        url "https://downloads.haskell.org/~ghc/9.8.2/ghc-9.8.2-aarch64-apple-darwin.tar.xz"
-        sha256 "67be089dedbe599d911efd8f82e4f9a19225761a3872be74dfd4b5a557fb8e1a"
+        url "https://downloads.haskell.org/~ghc/9.10.1/ghc-9.10.1-aarch64-apple-darwin.tar.xz"
+        sha256 "ffaf83b5d7a8b2c04920c6e3909c0be21dde27baf380d095fa27e840a3a2e804"
       end
       on_intel do
-        url "https://downloads.haskell.org/~ghc/9.8.2/ghc-9.8.2-x86_64-apple-darwin.tar.xz"
-        sha256 "64e8cca6310443cd6de8255edcf391d937829792e701167f7e5fb234f7150078"
+        url "https://downloads.haskell.org/~ghc/9.10.1/ghc-9.10.1-x86_64-apple-darwin.tar.xz"
+        sha256 "8cf22188930e10d7ac5270d425e21a3dab606af73a655493639345200c650be9"
       end
     end
     on_linux do
       on_arm do
-        url "https://downloads.haskell.org/~ghc/9.8.2/ghc-9.8.2-aarch64-deb10-linux.tar.xz"
-        sha256 "9a3776fd8dc02f95b751f0e44823d6727dea2c212857e2c5c5f6a38a034d1575"
+        url "https://downloads.haskell.org/~ghc/9.10.1/ghc-9.10.1-aarch64-deb10-linux.tar.xz"
+        sha256 "e6df50e62b696e3a8b759670fc79207ccc26e88a79a047561ca1ccb8846157dd"
       end
       on_intel do
-        url "https://downloads.haskell.org/~ghc/9.8.2/ghc-9.8.2-x86_64-ubuntu20_04-linux.tar.xz"
-        sha256 "a65a4726203c606b58a7f6b714a576e7d81390158c8afa0dece3841a4c602de2"
+        url "https://downloads.haskell.org/~ghc/9.10.1/ghc-9.10.1-x86_64-ubuntu20_04-linux.tar.xz"
+        sha256 "ae3be406fdb73bd2b0c22baada77a8ff2f8cde6220dd591dc24541cfe9d895eb"
       end
     end
   end
@@ -82,22 +73,22 @@ class Ghc < Formula
   resource "cabal-install" do
     on_macos do
       on_arm do
-        url "https://downloads.haskell.org/~cabal/cabal-install-3.12.1.0/cabal-install-3.12.1.0-aarch64-darwin.tar.xz"
-        sha256 "9c165ca9a2e593b12dbb0eca92c0b04f8d1c259871742d7e9afc352364fe7a3f"
+        url "https://downloads.haskell.org/~cabal/cabal-install-3.14.1.1/cabal-install-3.14.1.1-aarch64-darwin.tar.xz"
+        sha256 "bd40920fb3d5bcf3d78ce93445039ba43bc5edf769c52234223f25b83e3cc682"
       end
       on_intel do
-        url "https://downloads.haskell.org/~cabal/cabal-install-3.12.1.0/cabal-install-3.12.1.0-x86_64-darwin.tar.xz"
-        sha256 "e89392429f59bbcfaf07e1164e55bc63bba8e5c788afe43c94e00b515c1578af"
+        url "https://downloads.haskell.org/~cabal/cabal-install-3.14.1.1/cabal-install-3.14.1.1-x86_64-darwin.tar.xz"
+        sha256 "3690d8f7aa368141574f9eaf8e75bc26932ed7b422f5ade107d6972b3b72532f"
       end
     end
     on_linux do
       on_arm do
-        url "https://downloads.haskell.org/~cabal/cabal-install-3.12.1.0/cabal-install-3.12.1.0-aarch64-linux-deb10.tar.xz"
-        sha256 "c01f2e0b3ba1fe4104cf2933ee18558a9b81d85831a145e8aba33fa172c7c618"
+        url "https://downloads.haskell.org/~cabal/cabal-install-3.14.1.1/cabal-install-3.14.1.1-aarch64-linux-deb10.tar.xz"
+        sha256 "bf5fbe5d911c771b1601b80b00e9f9fb3db7f800258204322e411fdf1661a866"
       end
       on_intel do
-        url "https://downloads.haskell.org/~cabal/cabal-install-3.12.1.0/cabal-install-3.12.1.0-x86_64-linux-ubuntu20_04.tar.xz"
-        sha256 "3724f2aa22f330c5e6605978f3dd9adee4e052866321a8dd222944cd178c3c24"
+        url "https://downloads.haskell.org/~cabal/cabal-install-3.14.1.1/cabal-install-3.14.1.1-x86_64-linux-ubuntu20_04.tar.xz"
+        sha256 "91d2b65907e95462396fa96892ebbd903861fc07b5cb74993c612e33d4c0cc65"
       end
     end
   end
@@ -113,7 +104,7 @@ def install
     ENV["CC"] = ENV["ac_cv_path_CC"] = OS.linux? ? "cc" : ENV.cc
     ENV["CXX"] = ENV["ac_cv_path_CXX"] = OS.linux? ? "c++" : ENV.cxx
     ENV["LD"] = ENV["MergeObjsCmd"] = "ld"
-    ENV["PYTHON"] = which("python3.12")
+    ENV["PYTHON"] = which("python3.13")
 
     binary = buildpath/"binary"
     resource("binary").stage do