diff --git a/packages/marko-web-theme-default/package.json b/packages/marko-web-theme-default/package.json
index 11526e327..e39dc7709 100644
--- a/packages/marko-web-theme-default/package.json
+++ b/packages/marko-web-theme-default/package.json
@@ -17,7 +17,7 @@
     "@parameter1/base-cms-marko-web-icons": "^4.36.8",
     "@parameter1/base-cms-object-path": "^4.40.3",
     "@parameter1/base-cms-utils": "^4.40.3",
-    "bootstrap": "^4.6.2",
+    "bootstrap": "^5.0.0",
     "graphql": "^14.7.0",
     "graphql-tag": "^2.12.6"
   },
diff --git a/packages/marko-web-theme-monorail/package.json b/packages/marko-web-theme-monorail/package.json
index 318b2900b..08ffd81c2 100644
--- a/packages/marko-web-theme-monorail/package.json
+++ b/packages/marko-web-theme-monorail/package.json
@@ -35,7 +35,7 @@
     "@parameter1/base-cms-web-common": "^4.55.4",
     "@parameter1/joi": "^1.2.10",
     "@trevoreyre/autocomplete-vue": "^2.4.1",
-    "bootstrap": "^4.6.2",
+    "bootstrap": "^5.0.0",
     "cheerio": "^1.0.0-rc.12",
     "debug": "^4.3.4",
     "graphql-tag": "^2.12.6",
diff --git a/yarn.lock b/yarn.lock
index ce4fb8bb0..b055be3ab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2517,10 +2517,10 @@ boolbase@^1.0.0:
   resolved "https://registry.yarnpkg.com/boolbase/-/boolbase-1.0.0.tgz#68dff5fbe60c51eb37725ea9e3ed310dcc1e776e"
   integrity sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww==
 
-bootstrap@^4.6.2:
-  version "4.6.2"
-  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-4.6.2.tgz#8e0cd61611728a5bf65a3a2b8d6ff6c77d5d7479"
-  integrity sha512-51Bbp/Uxr9aTuy6ca/8FbFloBUJZLHwnhTcnjIeRn2suQWsWzcuJhGjKDB5eppVte/8oCdOL3VuwxvZDUggwGQ==
+bootstrap@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/bootstrap/-/bootstrap-5.0.0.tgz#97635ac0e0d6cb466700ebf0fd266bfabf352ed2"
+  integrity sha512-tmhPET9B9qCl8dCofvHeiIhi49iBt0EehmIsziZib65k1erBW1rHhj2s/2JsuQh5Pq+xz2E9bEbzp9B7xHG+VA==
 
 bowser@2.9.0:
   version "2.9.0"