diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
deleted file mode 100644
index 63b3a63..0000000
--- a/.github/FUNDING.yml
+++ /dev/null
@@ -1 +0,0 @@
-github: mrcjkb
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
new file mode 100644
index 0000000..f337b16
--- /dev/null
+++ b/.github/workflows/check.yml
@@ -0,0 +1,50 @@
+name: Perform checks
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  formatting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - name: Setup Action cache for nix
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          fail-mode: true
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v4 # This action
+      - name: Run nix fmt
+        run: nix fmt -- --check .
+
+  nix_flake_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - name: Setup Action cache for nix
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          fail-mode: true
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v4 # This action
+      - name: Run nix flake check
+        run: nix flake check
+
+  nix_build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v4 # This action
+        with:
+          fail-mode: true
+      - name: Build nvim
+        run: nix build .\#default
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
new file mode 100644
index 0000000..982d05e
--- /dev/null
+++ b/.github/workflows/update.yml
@@ -0,0 +1,30 @@
+name: Update `flake.lock`
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * 0' # runs weekly on Sunday at 00:00
+
+jobs:
+  update_lockfile:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - name: Setup Action cache for nix
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          fail-mode: true
+      - name: Update flake.lock
+        uses: DeterminateSystems/update-flake-lock@main
+        with:
+          # inputs: dzgui dzgui-testing # We'll see whether I want to limit the updates to dzgui
+          token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
+          pr-title: "Update flake.lock"
+          pr-assignees: jiriks74
+          pr-labels: |
+            flake.lock
+            automated
+      - name: Print PR number
+        run: echo Pull request number is ${{ steps.update.outputs.pull-request-number }}.
diff --git a/flake.lock b/flake.lock
index 5ecd162..825b71f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -39,11 +39,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1726560853,
-        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -181,11 +181,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1729413321,
-        "narHash": "sha256-I4tuhRpZFa6Fu6dcH9Dlo5LlH17peT79vx1y1SpeKt0=",
+        "lastModified": 1732521221,
+        "narHash": "sha256-2ThgXBUXAE1oFsVATK1ZX9IjPcS4nKFOAjhPNKuiMn0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1997e4aa514312c1af7e2bda7fad1644e778ff26",
+        "rev": "4633a7c72337ea8fd23a4f2ba3972865e3ec685d",
         "type": "github"
       },
       "original": {
diff --git a/nix/neovim-overlay.nix b/nix/neovim-overlay.nix
index f7cb482..3e96063 100644
--- a/nix/neovim-overlay.nix
+++ b/nix/neovim-overlay.nix
@@ -81,6 +81,7 @@ with final.pkgs.lib; let
     # ^ UI
 
     # language support
+    markdown-preview-nvim
     # ^ language support
 
     # navigation/editing enhancement plugins
diff --git a/nvim/plugin/keymaps.lua b/nvim/plugin/keymaps.lua
index ec37ead..317bb47 100644
--- a/nvim/plugin/keymaps.lua
+++ b/nvim/plugin/keymaps.lua
@@ -60,6 +60,8 @@ require('which-key').add({
     end,
     desc = "trouble: load [w]orkspace"
   },
+
+  { "<leader>lP", "<cmd>MarkdownPreviewToggle<cr>",                             desc = "Markdown [l] [P]review"},
 })
 
 -- Toggle the quickfix list (only opens if it is populated)