diff --git a/.github/workflows/cabal.project.local.ci.Darwin b/.github/workflows/cabal.project.local.ci
similarity index 58%
rename from .github/workflows/cabal.project.local.ci.Darwin
rename to .github/workflows/cabal.project.local.ci
index 725d39f7e..ceb009c9c 100644
--- a/.github/workflows/cabal.project.local.ci.Darwin
+++ b/.github/workflows/cabal.project.local.ci
@@ -1,6 +1,3 @@
-package cardano-crypto-praos
-  flags: -external-libsodium-vrf
-
 package HsOpenSSL
   flags: +use-pkg-config
 
diff --git a/.github/workflows/cabal.project.local.ci.Linux b/.github/workflows/cabal.project.local.ci.Linux
deleted file mode 100644
index 725d39f7e..000000000
--- a/.github/workflows/cabal.project.local.ci.Linux
+++ /dev/null
@@ -1,8 +0,0 @@
-package cardano-crypto-praos
-  flags: -external-libsodium-vrf
-
-package HsOpenSSL
-  flags: +use-pkg-config
-
-package pcre-light
-  flags: +use-pkg-config
diff --git a/.github/workflows/cabal.project.local.ci.MINGW64_NT-10.0-20348 b/.github/workflows/cabal.project.local.ci.MINGW64_NT-10.0-20348
deleted file mode 100644
index 725d39f7e..000000000
--- a/.github/workflows/cabal.project.local.ci.MINGW64_NT-10.0-20348
+++ /dev/null
@@ -1,8 +0,0 @@
-package cardano-crypto-praos
-  flags: -external-libsodium-vrf
-
-package HsOpenSSL
-  flags: +use-pkg-config
-
-package pcre-light
-  flags: +use-pkg-config
diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index e8d953adb..1178f1f74 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -7,128 +7,57 @@ on:
 
 jobs:
   build:
-    runs-on: ${{ matrix.os }}
+    runs-on: ${{ matrix.sys.os }}
 
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["8.10.7", "9.6.5"]
+        ghc: ["8.10.7", "9.6", "9.8"]
+        cabal: ["3.12"]
         # os: [ubuntu-latest, macos-latest, windows-latest]
-        os: [ubuntu-latest, windows-latest]
+        sys:
+          - { os: windows-latest, shell: 'C:/msys64/usr/bin/bash.exe -e {0}' }
+          - { os: ubuntu-latest, shell: bash }
 
-    env:
-      # we need the LD_LIBRARY_PATH env var here because we ended up installing libsecp256k1 into /usr/local,
-      # pkg-config, *does* return the proper location, but the library does not appear to be properly referenced.
-      # FIXME: this is arguably a bug, and pkg-config should return the right values!
-      LD_LIBRARY_PATH: ${{ (matrix.os != 'windows-latest' && '/usr/local/lib') || '' }}
+    defaults:
+        run:
+          shell: ${{ matrix.sys.shell }}
 
     steps:
-    - name: "WIN: Install System Dependencies via pacman (msys2)"
-      if: runner.os == 'Windows'
-      run: |
-         # ghcup should be installed on current GHA Windows runners. Let's use ghcup to run
-         # pacman, to install the necessary dependencies, ...
-         ghcup run -- pacman --noconfirm -S `
-            mingw-w64-x86_64-pkg-config `
-            mingw-w64-x86_64-pcre `
-            mingw-w64-x86_64-libsodium `
-            base-devel `
-            autoconf-wrapper `
-            autoconf `
-            automake `
-            libtool `
-            make
-
-     # this seems to break something. It _must_ come after the pacman setup
-     # above. It appears as if PATHEXT is set _after_ ghcup install ghc/cabal, and
-     # as such we'd need pacman.exe instead.
-    - name: Setup Haskell
-      run: |
-        # Use GHCUP to manage ghc/cabal
-        ghcup install ghc --set ${{ matrix.ghc }}
-        ghcup install cabal --set 3.10.1.0
 
-        ghc --version
-        cabal --version
+    - name: Install system dependencies
+      uses: input-output-hk/actions/base@latest
+      with:
+        use-sodium-vrf: true
+
+    - name: Install Haskell
+      uses: input-output-hk/actions/haskell@latest
+      id: setup-haskell
+      with:
+        ghc-version: ${{ matrix.ghc }}
+        cabal-version: ${{ matrix.cabal }}
 
-    - name: "WIN: fixup cabal config"
+    - name: WINDOWS Install libs
       if: runner.os == 'Windows'
       run: |
-        # make sure cabal knows about msys64, and mingw64 tools. Not clear why C:/cabal/config is empty
-        # and C:/cabal doesn't even exist.  The ghcup bootstrap file should have create it in the image:
-        # See https://github.com/haskell/ghcup-hs/blob/787edc17af4907dbc51c85e25c490edd8d68b80b/scripts/bootstrap/bootstrap-haskell#L591
-        # So we'll do it by hand here for now.
-        #
-        # We'll _not_ add extra-include-dirs, or extra-lib-dirs, and rely on what's shipped with GHC.
-        # https://github.com/msys2/MINGW-packages/issues/10837#issuecomment-1047105402
-        # https://gitlab.haskell.org/ghc/ghc/-/issues/21111
-        # if we _do_ want them, this would be the lines to add below
-
-        $ghcMingwDir = Join-Path -Path $(ghc --print-libdir) `
-                                 -ChildPath ../mingw/x86_64-*-mingw32/lib/ `
-                                 -Resolve
-
-        cabal user-config -a "extra-prog-path: C:/msys64/mingw64/bin, C:/msys64/usr/bin" `
-                          -a "extra-include-dirs: C:/msys64/mingw64/include" `
-                          -a ("extra-lib-dirs: {0}, C:/msys64/mingw64/lib" -f $ghcMingwDir) `
-                          -f init
+        /usr/bin/pacman --noconfirm -S mingw-w64-x86_64-pcre
 
     - name: Set cache version
       run: echo "CACHE_VERSION=grFfw7r" >> $GITHUB_ENV
 
-    - uses: actions/checkout@v2
-
-    - name: "[PowerShell] Add build script path"
-      if: runner.os == 'Windows'
-      shell: pwsh
-      run: Add-Content $env:GITHUB_PATH "$(pwd)/.github/bin"
-
-    - name: "[Bash] Add build script path"
-      if: runner.os != 'Windows'
-      run: echo "$(pwd)/.github/bin" >> $GITHUB_PATH
-
-    - name: "LINUX: Install build environment (apt-get)"
-      if: runner.os == 'Linux'
-      run: |
-        sudo apt-get update
-        sudo apt-get -y install libsodium23 libsodium-dev
-        sudo apt-get -y remove --purge software-properties-common
-        sudo apt-get -y autoremove
-
-    - name: "MAC: Install build environment (brew)"
-      if: runner.os == 'macOS'
-      run: |
-        brew install libsodium
-        brew install pcre
+    - uses: actions/checkout@v4
 
     - name: Cabal update
       run: cabal update
 
-    - name: "Setup cabal-store"
-      id: cabal-store
-      shell: bash
-      run: |
-        cabal_config_file="$(cabal help user-config | tail -n 1 | xargs)"
-
-        if [[ '${{ runner.os }}' != 'Windows' ]]; then
-          echo "cabal-store=$(dirname "$cabal_config_file")/store" | tee -a "$GITHUB_OUTPUT"
-        else
-          echo "cabal-store=C:\\cabal\\store" | tee -a "$GITHUB_OUTPUT"
-        fi
-
-    - name: "Check cabal-store"
-      shell: bash
-      run: echo '${{ steps.cabal-store.outputs.cabal-store }}'
-
     - name: Configure build
-      shell: bash
       run: |
         if [ "${{github.event.inputs.tests}}" == "all" ]; then
           echo "Reconfigure cabal projects to run tests for all dependencies"
           sed -i 's|tests: False|tests: True|g' cabal.project
         fi
 
-        cp ".github/workflows/cabal.project.local.ci.$(uname -s)" cabal.project.local
+        cp ".github/workflows/cabal.project.local.ci" cabal.project.local
 
         echo "# cabal.project.local"
         cat cabal.project.local
@@ -137,51 +66,50 @@ jobs:
       id: record-deps
       run: |
         cabal build all --dry-run
-        cat dist-newstyle/cache/plan.json | jq -r '."install-plan"[].id' | sort | uniq > dependencies.txt
-
-    - name: "OUTPUT Record weeknum"
-      shell: bash
-      run: echo "weeknum=$(/usr/bin/date -u "+%W")" >> $GITHUB_OUTPUT
-
-    - name: Cache Cabal store
-      uses: actions/cache@v2
-      with:
-        path: ${{ steps.cabal-store.outputs.cabal-store }}
-        key: cache-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('dependencies.txt') }}
-        restore-keys: |
-          cache-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('dependencies.txt') }}
-          cache-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}
-
-    - uses: actions/cache@v2
-      name: "Cache `dist-newstyle`"
+        cat dist-newstyle/cache/plan.json | jq -r '."install-plan"[] | select(.style != "local") | .id' | sort | uniq > dependencies.txt
+
+    # Use a fresh cache each month
+    - name: Store month number as environment variable used in cache version
+      run:  echo "MONTHNUM=$(date -u '+%m')" >> $GITHUB_ENV
+
+    # From the dependency list we restore the cached dependencies.
+    # We use the hash of `dependencies.txt` as part of the cache key because that will be stable
+    # until the `index-state` values in the `cabal.project` file changes.
+    - name: Restore cached dependencies
+      uses: actions/cache/restore@v4
+      id: cache
       with:
         path: |
+          ${{ steps.setup-haskell.outputs.cabal-store }}
           dist-newstyle
-          !dist-newstyle/**/.git
-        key: cache-dist-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ steps.record-deps.outputs.weeknum }}
-        restore-keys: cache-dist-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}
+        key:
+          cache-${{ env.CABAL_CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ env.MONTHNUM }}-${{ hashFiles('dependencies.txt') }}
+        # try to restore previous cache from this month if there's no cache for the dependencies set
+        restore-keys: |
+          cache-${{ env.CABAL_CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ env.MONTHNUM }}-
 
     - name: Install dependencies
       run: cabal build all --only-dependencies
 
+    # Always store the cabal cache.
+    - name: Cache Cabal store
+      uses: actions/cache/save@v4
+      with:
+        path: |
+          ${{ steps.setup-haskell.outputs.cabal-store }}
+          dist-newstyle
+        key:
+          ${{ steps.cache.outputs.cache-primary-key }}
+
     - name: Build
       run: cabal build all
 
     - name: Run unit tests
-      shell: bash
-      run: |
-        cabal test cardano-addresses
-        if [ "${{ runner.os }}" != "Windows" ] || [ "${{ matrix.ghc }}" !=  "9.6.5" ]; then
-          # This test is currently broken with GHC 9.6 on windows.
-          # This could be related to:
-          # * UTF8 encoding and the use of emoji's in the output.
-          # * unhandled PEi386 relocation type 14 (less likely).
-          cabal test cardano-addresses-cli
-        fi
+      run: cabal test cardano-addresses cardano-addresses-cli
 
     - name: Upload Windows Artifact
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v4
       if: runner.os == 'Windows'
       with:
-        name: ${{ matrix.os }}-exe
-        path: ${{ steps.cabal-store.outputs.cabal-store }}
+        name: ${{ matrix.sys.os }}-${{ matrix.ghc }}-exe
+        path: ${{ steps.setup-haskell.outputs.cabal-store }}
diff --git a/cabal.project b/cabal.project
index 0febcb0f4..9df8ab195 100644
--- a/cabal.project
+++ b/cabal.project
@@ -10,6 +10,10 @@ repository cardano-haskell-packages
     c00aae8461a256275598500ea0e187588c35a5d5d7454fb57eac18d9edb86a56
     d4a35cd3121aa00d18544bb0ac01c3e1691d618f462c46129271bccf39f7e8ee
 
+index-state:
+  , hackage.haskell.org 2024-08-18T16:26:35Z
+  , cardano-haskell-packages 2024-08-15T12:55:30Z
+  
 -- See CONTRIBUTING for information about these, including some Nix commands
 -- you need to run if you change them
 
@@ -54,10 +58,6 @@ else
 
   active-repositories: hackage.haskell.org, cardano-haskell-packages
 
-index-state:
-  , hackage.haskell.org 2024-06-05T16:48:53Z
-  , cardano-haskell-packages 2024-06-05T16:48:53Z
-
 packages:
   command-line/cardano-addresses-cli.cabal
   core/cardano-addresses.cabal
@@ -68,4 +68,3 @@ constraints:
   , optparse-applicative >= 0.18.1.0
 
 tests: True
-test-show-details: direct
diff --git a/flake.lock b/flake.lock
index 6ef5e09da..fd725c2c0 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,11 +3,11 @@
     "CHaP": {
       "flake": false,
       "locked": {
-        "lastModified": 1717745122,
-        "narHash": "sha256-RW0mbVghzN/ywg3CVsdHPB3WCj8KAEAS0egV4PFro/4=",
+        "lastModified": 1723730199,
+        "narHash": "sha256-0A7eS9bHkk65jmOcOWPRnaRdpRGMkMWTkZh1NDFM240=",
         "owner": "intersectmbo",
         "repo": "cardano-haskell-packages",
-        "rev": "a8d2c3e2b819e2f331aae71de5544a855a267e65",
+        "rev": "de3964f328b8d543ed3e2c167297a5d5ddf6fac4",
         "type": "github"
       },
       "original": {
@@ -169,51 +169,14 @@
         "type": "github"
       }
     },
-    "ghc910X": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1714520650,
-        "narHash": "sha256-4uz6RA1hRr0RheGNDM49a/B3jszqNNU8iHIow4mSyso=",
-        "ref": "ghc-9.10",
-        "rev": "2c6375b9a804ac7fca1e82eb6fcfc8594c67c5f5",
-        "revCount": 62663,
-        "submodules": true,
-        "type": "git",
-        "url": "https://gitlab.haskell.org/ghc/ghc"
-      },
-      "original": {
-        "ref": "ghc-9.10",
-        "submodules": true,
-        "type": "git",
-        "url": "https://gitlab.haskell.org/ghc/ghc"
-      }
-    },
-    "ghc911": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1714817013,
-        "narHash": "sha256-m2je4UvWfkgepMeUIiXHMwE6W+iVfUY38VDGkMzjCcc=",
-        "ref": "refs/heads/master",
-        "rev": "fc24c5cf6c62ca9e3c8d236656e139676df65034",
-        "revCount": 62816,
-        "submodules": true,
-        "type": "git",
-        "url": "https://gitlab.haskell.org/ghc/ghc"
-      },
-      "original": {
-        "submodules": true,
-        "type": "git",
-        "url": "https://gitlab.haskell.org/ghc/ghc"
-      }
-    },
     "hackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1717807055,
-        "narHash": "sha256-CCqRhadPKQUkB/ncLBGHHt7XT8VbSR532sfpjbPNcZI=",
+        "lastModified": 1723941124,
+        "narHash": "sha256-NobZFR+0sXRpKfx9q1cFkCdVlyfZQIxV/4ZL9t+cZ44=",
         "owner": "input-output-hk",
         "repo": "hackage.nix",
-        "rev": "edb78b8087db9d494ee3eeb9105c7650e44d009f",
+        "rev": "c44c06c3d2c763e8790173f09ee8fe748bd14ff3",
         "type": "github"
       },
       "original": {
@@ -231,8 +194,6 @@
         "cardano-shell": "cardano-shell",
         "flake-compat": "flake-compat",
         "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
-        "ghc910X": "ghc910X",
-        "ghc911": "ghc911",
         "hackage": "hackage",
         "hls-1.10": "hls-1.10",
         "hls-2.0": "hls-2.0",
@@ -243,6 +204,7 @@
         "hls-2.6": "hls-2.6",
         "hls-2.7": "hls-2.7",
         "hls-2.8": "hls-2.8",
+        "hls-2.9": "hls-2.9",
         "hpc-coveralls": "hpc-coveralls",
         "hydra": "hydra",
         "iserv-proxy": "iserv-proxy",
@@ -256,16 +218,17 @@
         "nixpkgs-2211": "nixpkgs-2211",
         "nixpkgs-2305": "nixpkgs-2305",
         "nixpkgs-2311": "nixpkgs-2311",
+        "nixpkgs-2405": "nixpkgs-2405",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "old-ghc-nix": "old-ghc-nix",
         "stackage": "stackage"
       },
       "locked": {
-        "lastModified": 1717846179,
-        "narHash": "sha256-iSGepzdSLyvYafn+OvXCGN50ZsWQiGcJIKq4s+sg4nY=",
+        "lastModified": 1723942254,
+        "narHash": "sha256-hBSLp1IhWq0S1RMvOqimehS7zyfXB39WrF/B6VNkVig=",
         "owner": "input-output-hk",
         "repo": "haskell.nix",
-        "rev": "8f50d10aa7ce71f2dcb6c8eb25c2352294ddc854",
+        "rev": "80d9d079d86b33bdf8e09faa5af0f1ffc99ef920",
         "type": "github"
       },
       "original": {
@@ -427,6 +390,23 @@
         "type": "github"
       }
     },
+    "hls-2.9": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1718469202,
+        "narHash": "sha256-THXSz+iwB1yQQsr/PY151+2GvtoJnTIB2pIQ4OzfjD4=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "40891bccb235ebacce020b598b083eab9dda80f1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "2.9.0.0",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
     "hpc-coveralls": {
       "flake": false,
       "locked": {
@@ -641,11 +621,11 @@
     },
     "nixpkgs-2305": {
       "locked": {
-        "lastModified": 1701362232,
-        "narHash": "sha256-GVdzxL0lhEadqs3hfRLuj+L1OJFGiL/L7gCcelgBlsw=",
+        "lastModified": 1705033721,
+        "narHash": "sha256-K5eJHmL1/kev6WuqyqqbS1cdNnSidIZ3jeqJ7GbrYnQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d2332963662edffacfddfad59ff4f709dde80ffe",
+        "rev": "a1982c92d8980a0114372973cbdfe0a307f1bdea",
         "type": "github"
       },
       "original": {
@@ -657,11 +637,11 @@
     },
     "nixpkgs-2311": {
       "locked": {
-        "lastModified": 1701386440,
-        "narHash": "sha256-xI0uQ9E7JbmEy/v8kR9ZQan6389rHug+zOtZeZFiDJk=",
+        "lastModified": 1719957072,
+        "narHash": "sha256-gvFhEf5nszouwLAkT9nWsDzocUTqLWHuL++dvNjMp9I=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "293822e55ec1872f715a66d0eda9e592dc14419f",
+        "rev": "7144d6241f02d171d25fba3edeaf15e0f2592105",
         "type": "github"
       },
       "original": {
@@ -671,6 +651,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-2405": {
+      "locked": {
+        "lastModified": 1720122915,
+        "narHash": "sha256-Nby8WWxj0elBu1xuRaUcRjPi/rU3xVbkAt2kj4QwX2U=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "835cf2d3f37989c5db6585a28de967a667a75fb1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-24.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-regression": {
       "locked": {
         "lastModified": 1643052045,
@@ -689,17 +685,17 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1694822471,
-        "narHash": "sha256-6fSDCj++lZVMZlyqOe9SIOL8tYSBz1bI8acwovRwoX8=",
+        "lastModified": 1720181791,
+        "narHash": "sha256-i4vJL12/AdyuQuviMMd1Hk2tsGt02hDNhA0Zj1m16N8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "47585496bcb13fb72e4a90daeea2f434e2501998",
+        "rev": "4284c2b73c8bce4b46a6adf23e16d9e2ec8da4bb",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
         "repo": "nixpkgs",
-        "rev": "47585496bcb13fb72e4a90daeea2f434e2501998",
         "type": "github"
       }
     },
@@ -769,11 +765,11 @@
     "stackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1717806268,
-        "narHash": "sha256-QUGjB0OLnmXrS+u4jCdvawfWfngv+R99qmbFvpRaW4I=",
+        "lastModified": 1723939964,
+        "narHash": "sha256-wrreJAx4GHsAoTOrrViQEMWqQYN9l70P9e+MDTTTGBk=",
         "owner": "input-output-hk",
         "repo": "stackage.nix",
-        "rev": "6c6db491b4a4aab289fe0a5ada8bb9bfb842b23c",
+        "rev": "95c340a96bc5e5002a22b33fb776e552fbec2219",
         "type": "github"
       },
       "original": {
diff --git a/jsapi/test/Main.hs b/jsapi/test/Main.hs
index 7c62abf91..ae4b87369 100644
--- a/jsapi/test/Main.hs
+++ b/jsapi/test/Main.hs
@@ -31,8 +31,8 @@ foreign import javascript interruptible "testStart($1, $c);" initComplete
 #else
 initComplete :: Object -> JSM ()
 initComplete api =
-  void $ api ^. js1 "version" (fun $ \ _ _ [ver] ->
-    fromJSValUnchecked ver >>= (liftIO . putStrLn))
+  void $ api ^. js1 "version" (fun $ \ _ _ xs ->
+    fromJSValUnchecked (head xs) >>= (liftIO . putStrLn))
 #endif
 
 -- When runing the native version, point a browser at http://localhost:3757/