diff --git a/package.json b/package.json
index 87550eb..c17ebe3 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "author": "Alan Orth",
   "license": "AGPL-3.0-only",
   "devDependencies": {
-    "bootstrap": "^5.2.3",
+    "bootstrap": "^5.3.3",
     "clean-css-cli": "^5.6.1",
     "sass": "^1.55.0"
   },
diff --git a/source/scss/bootstrap.scss b/source/scss/bootstrap.scss
index 30b20f7..a130feb 100644
--- a/source/scss/bootstrap.scss
+++ b/source/scss/bootstrap.scss
@@ -6,6 +6,7 @@
 // Configuration
 @import "../../node_modules/bootstrap/scss/functions";
 @import "../../node_modules/bootstrap/scss/variables";
+@import "../../node_modules/bootstrap/scss/variables-dark";
 @import "../../node_modules/bootstrap/scss/maps";
 @import "../../node_modules/bootstrap/scss/mixins";
 @import "../../node_modules/bootstrap/scss/utilities";