diff --git a/package.json b/package.json
index fd7b4f8..9b42fdd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "fwdekker.com",
-    "version": "0.33.8",
+    "version": "0.33.9",
     "description": "The source code of [my personal website](https://fwdekker.com/).",
     "author": "Felix W. Dekker",
     "browser": "dist/bundle.js",
diff --git a/src/main/js/Persistence.ts b/src/main/js/Persistence.ts
index 970698c..6b97c8a 100644
--- a/src/main/js/Persistence.ts
+++ b/src/main/js/Persistence.ts
@@ -119,7 +119,7 @@ export class Persistence {
      * @param environment the environment to persist
      */
     static setEnvironment(environment: Environment): void {
-        Cookies.set("env", environment.variables, {"path": "/"});
+        Cookies.set("env", environment.variables, {path: "/", secure: true, sameSite: "lax"});
     }
 
     /**
@@ -162,8 +162,10 @@ export class Persistence {
      */
     static setPoweroff(value: boolean): void {
         Cookies.set("poweroff", "" + value, {
-            "expires": new Date(new Date().setSeconds(new Date().getSeconds() + 30)),
-            "path": "/"
+            expires: new Date(new Date().setSeconds(new Date().getSeconds() + 30)),
+            path: "/",
+            secure: true,
+            sameSite: "lax"
         });
     }