diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 76349e5..c7bfcd8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   nix-build:
     name: nix-build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
 
       - name: checkout
@@ -36,11 +36,11 @@ jobs:
 
       - name: build-frontend
         run: |
-          nix develop --command bash -c "cd frontend && exec ./build.sh --low-memory-unused --converge --gufa --flatten --rereloop -Oz"
+          nix develop --command bash -c "cd frontend && exec ./build.sh --low-memory-unused --converge -O4"
 
   ghcup-build:
     name: ghcup-build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
 
       - name: checkout
@@ -56,13 +56,12 @@ jobs:
 
       - name: cabal
         run: |
-          ghcup config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/develop/ghcup-prereleases-0.0.8.yaml
-          ghcup install cabal --set 3.15.0.0.2024.10.3
+          ghcup install cabal --set latest
 
       - name: wasm32-wasi-ghc
         run: |
-          ghcup config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/develop/ghcup-cross-0.0.8.yaml
-          ghcup install ghc --set wasm32-wasi-9.10.1.20241021 -- $CONFIGURE_ARGS
+          ghcup config add-release-channel https://gitlab.haskell.org/haskell-wasm/ghc-wasm-meta/-/raw/master/ghcup-wasm-0.0.9.yaml
+          ghcup install ghc --set wasm32-wasi-9.12 -- $CONFIGURE_ARGS
 
       - uses: dw-labs-org/dart-sass-gha@v1
 
@@ -92,11 +91,11 @@ jobs:
       - name: build-frontend
         run: |
           cd frontend
-          ./build.sh --low-memory-unused --converge --gufa --flatten --rereloop -Oz
+          ./build.sh --low-memory-unused --converge -O4
 
   non-nix-build:
     name: non-nix-build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       pages: write
       id-token: write
@@ -113,7 +112,7 @@ jobs:
           ~/.ghc-wasm/add_to_github_path.sh
           popd
         env:
-          FLAVOUR: '9.10'
+          FLAVOUR: '9.12'
 
       - uses: dw-labs-org/dart-sass-gha@v1
 
@@ -134,7 +133,7 @@ jobs:
       - name: build-frontend
         run: |
           cd frontend
-          ./build.sh --low-memory-unused --converge --gufa --flatten --rereloop -Oz
+          ./build.sh --low-memory-unused --converge -O4
 
       - name: upload-pages-artifact
         uses: actions/upload-pages-artifact@v3
diff --git a/cabal.project b/cabal.project
index abb82a4..7f4cfda 100644
--- a/cabal.project
+++ b/cabal.project
@@ -1,6 +1,16 @@
 packages: . hs2048
 
-index-state: 2024-11-15T08:25:42Z
+index-state: 2025-02-07T08:16:42Z
+
+allow-newer:
+  all:base
+
+-- Fix building with recent text, remove when miso-1.8.6.0 or newer
+-- is released
+source-repository-package
+  type: git
+  location: https://github.com/dmjio/miso.git
+  tag: e411f3e2872465f37eb53b6de4542010a105b53a
 
 if arch(wasm32)
   -- Required for TemplateHaskell. When using wasm32-wasi-cabal from
diff --git a/flake.lock b/flake.lock
index 8a02038..a217c4e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -25,11 +25,11 @@
       },
       "locked": {
         "host": "gitlab.haskell.org",
-        "lastModified": 1732635833,
-        "narHash": "sha256-7dYfVCxt9qnvFrlccFSO1i4FrSdU8SMJhF5KxH2sROY=",
+        "lastModified": 1738960378,
+        "narHash": "sha256-oV++/4mcNUD7ktQUOzeiIJ4/CgWJK5b1SwVrOCcNelA=",
         "owner": "haskell-wasm",
         "repo": "ghc-wasm-meta",
-        "rev": "56dfe2478cae35ded335261c854bb8b2a5e7f4d2",
+        "rev": "9624dc6d6b7b41e61decc968b04d4850fa50f670",
         "type": "gitlab"
       },
       "original": {
@@ -41,11 +41,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1732014248,
-        "narHash": "sha256-y/MEyuJ5oBWrWAic/14LaIr/u5E0wRVzyYsouYY3W6w=",
+        "lastModified": 1738680400,
+        "narHash": "sha256-ooLh+XW8jfa+91F1nhf9OF7qhuA/y1ChLx6lXDNeY5U=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "23e89b7da85c3640bbc2173fe04f4bd114342367",
+        "rev": "799ba5bffed04ced7067a91798353d360788b30d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 543b4f2..a38ff3f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,7 +8,7 @@
     {
       devShells.default = pkgs.mkShell {
         packages = [
-          inputs.ghc-wasm-meta.packages.${system}.all_9_10
+          inputs.ghc-wasm-meta.packages.${system}.all_9_12
           pkgs.dart-sass
         ];
       };