diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 230ded7f..064aa424 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -21,7 +21,7 @@
                 "loglevel": "^1.9.2",
                 "npm-run-all2": "^7.0.2",
                 "ome-zarr.js": "^0.0.17",
-                "postcss": "^8.5.3",
+                "postcss": "^8.5.13",
                 "react": "^18.3.1",
                 "react-dom": "^18.3.1",
                 "react-error-boundary": "^6.0.0",
@@ -8391,9 +8391,9 @@
             }
         },
         "node_modules/postcss": {
-            "version": "8.5.6",
-            "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
-            "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+            "version": "8.5.13",
+            "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.13.tgz",
+            "integrity": "sha512-qif0+jGGZoLWdHey3UFHHWP0H7Gbmsk8T5VEqyYFbWqPr1XqvLGBbk/sl8V5exGmcYJklJOhOQq1pV9IcsiFag==",
             "funding": [
                 {
                     "type": "opencollective",
diff --git a/frontend/package.json b/frontend/package.json
index cf108927..23c93278 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -42,7 +42,7 @@
         "loglevel": "^1.9.2",
         "npm-run-all2": "^7.0.2",
         "ome-zarr.js": "^0.0.17",
-        "postcss": "^8.5.3",
+        "postcss": "^8.5.13",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "react-error-boundary": "^6.0.0",