diff --git a/backend/main.mjs b/backend/main.mjs
index 580df13..f8d908c 100644
--- a/backend/main.mjs
+++ b/backend/main.mjs
@@ -5,6 +5,7 @@ import compression from 'compression';
 import helmet from 'helmet';
 import RateLimit from 'express-rate-limit';
 import morgan from 'morgan';
+import cors from 'cors';
 
 // Constants
 
@@ -77,6 +78,7 @@ app.use(
     })
 );
 app.use(morgan('combined'));
+app.use(cors());
 
 // POST
 const limiter20 = RateLimit({
diff --git a/backend/package-lock.json b/backend/package-lock.json
index 05d3589..a5a9a9e 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -12,6 +12,7 @@
         "@blackglory/better-sqlite3-migrations": "^0.1.19",
         "better-sqlite3": "^11.8.1",
         "compression": "^1.8.0",
+        "cors": "^2.8.5",
         "express": "^4.21.2",
         "express-rate-limit": "^7.5.0",
         "helmet": "^8.0.0",
@@ -412,6 +413,19 @@
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ==",
       "license": "MIT"
     },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "license": "MIT",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/debug": {
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -1196,6 +1210,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.13.4",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.4.tgz",
diff --git a/backend/package.json b/backend/package.json
index 740dcd8..50febf7 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -18,6 +18,7 @@
     "@blackglory/better-sqlite3-migrations": "^0.1.19",
     "better-sqlite3": "^11.8.1",
     "compression": "^1.8.0",
+    "cors": "^2.8.5",
     "express": "^4.21.2",
     "express-rate-limit": "^7.5.0",
     "helmet": "^8.0.0",