diff --git a/.github/workflows/check.yaml b/.github/workflows/check.yaml
index 43bdc05..fd0fa64 100644
--- a/.github/workflows/check.yaml
+++ b/.github/workflows/check.yaml
@@ -13,12 +13,15 @@ jobs:
         uses: "actions/checkout@v4"
 
       - name: "Install Nix"
-        uses: "cachix/install-nix-action@v27"
-        with:
-          nix_path: "nixpkgs=channel:nixos-24.05"
+        uses: "DeterminateSystems/nix-installer-action@v16"
 
-      - name: "Use Magic Nix Cache"
-        uses: "DeterminateSystems/magic-nix-cache-action@v7"
+      - name: "Use Nix Cache"
+        uses: "DeterminateSystems/magic-nix-cache-action@v8"
+
+      ## TODO: This should not be necessary, but nixpkgs v24.11 requires it.
+      - name: "Update Haskell Package List"
+        run: |
+          nix-shell --pure --run "cabal update --ignore-project"
 
       - name: "Check Application"
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 66adc04..8b99332 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -25,15 +25,15 @@ jobs:
           fetch-depth: 0
 
       - name: "Install Nix"
-        if: "${{ steps.release.outputs.release_created }}"
-        uses: "cachix/install-nix-action@v27"
-        with:
-          nix_path: "nixpkgs=channel:nixos-24.05"
-          extra_nix_config: "system-features = benchmark, big-parallel, nixos-test, uid-range, kvm"
+        uses: "DeterminateSystems/nix-installer-action@v16"
 
-      - name: "Use Magic Nix Cache"
-        if: "${{ steps.release.outputs.release_created }}"
-        uses: "DeterminateSystems/magic-nix-cache-action@v3"
+      - name: "Use Nix Cache"
+        uses: "DeterminateSystems/magic-nix-cache-action@v8"
+
+      ## TODO: This should not be necessary, but nixpkgs v24.11 requires it.
+      - name: "Update Haskell Package List"
+        run: |
+          nix-shell --pure --run "cabal update --ignore-project"
 
       - name: "Build Application"
         if: "${{ steps.release.outputs.release_created }}"
diff --git a/build-static.sh b/build-static.sh
index 33ccab7..83da028 100644
--- a/build-static.sh
+++ b/build-static.sh
@@ -9,7 +9,7 @@
 ## `--enable-executable-stripping`, hence the `strip` command usage.
 
 ## GHC version:
-GHC_VERSION="9.6.5"
+GHC_VERSION="9.6.6"
 
 ## Docker image:
 DOCKER_IMAGE="quay.io/benz0li/ghc-musl:${GHC_VERSION}"
diff --git a/nix/sources.json b/nix/sources.json
index 16cb240..94bb0a0 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -1,14 +1,14 @@
 {
     "nixpkgs": {
-        "branch": "release-24.05",
+        "branch": "release-24.11",
         "description": "Nix Packages collection",
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "29c3451c88250659c4dccf3468523c00ed530c07",
-        "sha256": "19qrl1bb9m5bdgpq5pcpd2yd22h7vllcxcinmwlwj8c6v76dyk1s",
+        "rev": "e24b4c09e963677b1beea49d411cd315a024ad3a",
+        "sha256": "1m383nldy1jvl8n2jw02l26w9iib4b2a9341c1kf74miaahw7qx6",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/29c3451c88250659c4dccf3468523c00ed530c07.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/e24b4c09e963677b1beea49d411cd315a024ad3a.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }