diff --git a/mingw-w64-emscripten/PKGBUILD b/mingw-w64-emscripten/PKGBUILD
index fd997b7ba1..1daa38629d 100644
--- a/mingw-w64-emscripten/PKGBUILD
+++ b/mingw-w64-emscripten/PKGBUILD
@@ -6,10 +6,10 @@ pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 # Sadly, upstream currently suggests bundling a binaryen version for the time being:
 # https://github.com/emscripten-core/emscripten/issues/12252
 # I'm obviously unhappy about that but it appears to be the only practical solution for the time being.
-pkgver=4.0.11
+pkgver=4.0.12
 # NOTE: You need to run ./get-compatible-versions.sh after changing the pkgver!
-_binaryen_revision=fc29e302e6708e71cc0a0058fcf4aee97140a750
-_llvm_project_revision=bf94c8ddb321696956365830bf23dd232ef90e74
+_binaryen_revision=fc6a7977cccea66c7d78f3d86eb0cdac9f37cbdb
+_llvm_project_revision=ceb2b9c141903c16d76e0b3a0cbeb0e9f3c68d5c
 pkgrel=1
 pkgdesc="Compile C and C++ into highly-optimizable JavaScript for the web (mingw-w64)"
 arch=('any')
@@ -35,9 +35,9 @@ install="emscripten-${MSYSTEM}.install"
 source=("git+$msys2_repository_url#tag=$pkgver"
         "llvm-project-$_llvm_project_revision.tar.gz::https://github.com/llvm/llvm-project/archive/$_llvm_project_revision.tar.gz"
         "binaryen-$_binaryen_revision.tar.gz::https://github.com/WebAssembly/binaryen/archive/$_binaryen_revision.tar.gz")
-sha256sums=('3015f6a5e0782301338327581990f0e13bd7c77a4be38ba5cec3a58f5f315760'
-            '473e8bd776bfd8bea3a0bdc6d1dba7c4c12f07cb1a30c488f096f0566bafe9ff'
-            'aaea58bcfaa4ce311da642a708ec9a126e9b561c5191a182a41ccb5fa7acc0e5')
+sha256sums=('7dd8cd42de5b5d4ed084c5d3fc5dc745f2720a8081cc952cf7c17afdbb2e6ffa'
+            'e5e8a051635ba5c5e2864da805965c9bcd783acd6de835b039dbdecd83f87fcd'
+            'ce3d9faa3dcfd09b7579af111c42444aa9e5f81e988a2efe6dce18b69af0aa87')
 noextract=("llvm-project-$_llvm_project_revision.tar.gz")
 
 prepare() {