diff --git a/package.json b/package.json
index 3522bfd..2d27a3d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "doomsday",
-    "version": "1.3.4",
+    "version": "1.3.5",
     "description": "Test your mastery of Conway's Doomsday rule.",
     "author": "Felix W. Dekker",
     "browser": "dist/bundle.js",
diff --git a/src/main/js/index.js b/src/main/js/index.js
index 8a50b6e..6dc7895 100644
--- a/src/main/js/index.js
+++ b/src/main/js/index.js
@@ -204,7 +204,8 @@ class ToggleableSection {
      * @private
      */
     _storeToggle() {
-        Cookies.set(`toggle-${this._name}`, this.isOpened(), {expires: 365 * 10});
+        Cookies.set(`toggle-${this._name}`, this.isOpened(),
+            {expires: 365 * 10, secure: true, sameSite: "lax", path: ""});
     }
 
     /**