diff --git a/nixos/flake.lock b/nixos/flake.lock
index ba37cbe..7bced25 100644
--- a/nixos/flake.lock
+++ b/nixos/flake.lock
@@ -8,11 +8,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1695973661,
-        "narHash": "sha256-BP2H4c42GThPIhERtTpV1yCtwQHYHEKdRu7pjrmQAwo=",
+        "lastModified": 1698410321,
+        "narHash": "sha256-MphuSlgpmKwtJncGMohryHiK55J1n6WzVQ/OAfmfoMc=",
         "owner": "numtide",
         "repo": "devshell",
-        "rev": "cd4e2fda3150dd2f689caeac07b7f47df5197c31",
+        "rev": "1aed986e3c81a4f6698e85a7452cbfcc4b31a36e",
         "type": "github"
       },
       "original": {
@@ -62,11 +62,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1697851979,
-        "narHash": "sha256-lJ8k4qkkwdvi+t/Xc6Fn74kUuobpu9ynPGxNZR6OwoA=",
+        "lastModified": 1698288402,
+        "narHash": "sha256-jIIjApPdm+4yt8PglX8pUOexAdEiAax/DXW3S/Mb21E=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5550a85a087c04ddcace7f892b0bdc9d8bb080c8",
+        "rev": "60b9db998f71ea49e1a9c41824d09aa274be1344",
         "type": "github"
       },
       "original": {
@@ -93,11 +93,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1697723726,
-        "narHash": "sha256-SaTWPkI8a5xSHX/rrKzUe+/uVNy6zCGMXgoeMb7T9rg=",
+        "lastModified": 1698318101,
+        "narHash": "sha256-gUihHt3yPD7bVqg+k/UVHgngyaJ3DMEBchbymBMvK1E=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7c9cc5a6e5d38010801741ac830a3f8fd667a7a0",
+        "rev": "63678e9f3d3afecfeafa0acead6239cdb447574c",
         "type": "github"
       },
       "original": {
@@ -125,11 +125,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1697943852,
-        "narHash": "sha256-DaBxUPaZhQ3yLCmAATshYB7qo7NwcMvSFWz9T3bjYYY=",
+        "lastModified": 1698273636,
+        "narHash": "sha256-swsqg/ckSVJnravx7ie9NFQSKIH27owtlk0wh4+xStk=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "30a0ba4a20703b4bfe047fe5def1fc24978e322c",
+        "rev": "014e44d334a39481223a5d163530d4c4ca2e75cb",
         "type": "github"
       },
       "original": {
diff --git a/scripts/toggle-light-dark.sh b/scripts/toggle-light-dark.sh
new file mode 100755
index 0000000..7ba6e5c
--- /dev/null
+++ b/scripts/toggle-light-dark.sh
@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+# Toggle light- or dark-mode for your applications
+# Usage: toggle [-m light|dark]
+
+#################
+### Variables ###
+#################
+
+THEME_LIGHT='tdpeuter-light'
+THEME_DARK='tdpeuter-dark'
+THEME_DEFAULT="${THEME_LIGHT}"
+
+STATE_FILE="${HOME}/.local/state/sisyphus/theme"
+
+declare -A theme_next
+theme_next[${THEME_LIGHT}]="${THEME_DARK}"
+theme_next[${THEME_DARK}]="${THEME_LIGHT}"
+
+declare -A gsettings_alt
+gsettings_alt[${THEME_LIGHT}]='default'
+gsettings_alt[${THEME_DARK}]='prefer-dark'
+
+#############
+### Logic ###
+#############
+
+# Parse options
+while getopts ":m:" option; do
+    case "${option}" in
+        m)
+            if [ "${OPTARG}" == 'light' ]; then
+                theme="${THEME_LIGHT}"
+            elif [ "${OPTARG}" == 'dark' ]; then
+                theme="${THEME_DARK}"
+            else
+                >&2 printf "Error: Invalid mode: '%s'.\nShould be either 'light' or 'dark'\n" "${option}"
+                exit 1
+            fi
+            ;;
+        *)
+            >&2 printf "Error: Invalid option: '%s'.\n" "${option}"
+            exit 1
+            ;;
+    esac
+done
+shift $(( OPTIND - 1 ))
+
+# Check if the state file exists
+if ! [ -d "$(dirname ${STATE_FILE})" ]; then
+    mkdir -p "$(dirname ${STATE_FILE})"
+fi
+
+# Choose next theme
+previous_theme="$(cat ${STATE_FILE})"
+if ! [[ -z "${previous_theme}" || "${theme}" ]]; then
+    theme="${theme_next[${previous_theme}]}"
+fi
+echo "${theme:=${THEME_DEFAULT}}" > "${STATE_FILE}"
+
+######################
+### Set all themes ###
+######################
+
+# GNOME
+if [ "$(command -v gsettings)" ]; then
+    gsettings set org.gnome.desktop.interface color-scheme "${gsettings_alt[${theme}]}"
+fi
+
+# Kitty
+if [ "$(command -v kitty)" ]; then
+    kitten themes --config-file-name theme.conf "${theme}"
+fi
+
+# Vim
+# This does not reload the config, but will use it when you restart vim
+# Toggle an existing window using `:colorscheme ${theme}`
+if [ "$(command -v vim)" ]; then
+    echo "colorscheme ${theme}" > ~/.vim/theme.conf
+fi
+
diff --git a/stow/vim/.vimrc b/stow/vim/.vimrc
index 933d6ed..bbd482f 100644
--- a/stow/vim/.vimrc
+++ b/stow/vim/.vimrc
@@ -2,7 +2,7 @@
 " ~/.vimrc
 "
 
-colorscheme tdpeuter-light
+source ~/.vim/theme.conf
 
 set autoindent
 set conceallevel=2