diff --git a/package-lock.json b/package-lock.json
index 3c4a713..a976b00 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,7 +32,7 @@
         "@lezer/highlight": "^1.2.3",
         "@lezer/markdown": "^1.7.2",
         "codemirror": "^6.0.2",
-        "katex": "^0.18.7",
+        "katex": "^0.18.9",
         "react": "^19.0.0",
         "react-dom": "^19.0.0"
       },
@@ -6649,9 +6649,9 @@
       }
     },
     "node_modules/katex": {
-      "version": "0.18.7",
-      "resolved": "https://registry.npmjs.org/katex/-/katex-0.18.7.tgz",
-      "integrity": "sha512-h+UCwkZ+4Jz8WQ7MLGfj7UVFrRCizGb912fwF4luGdYsC5paYG1vx+jy+KRcC/XkpjGva/P7nAWuxNnPzRvzHw==",
+      "version": "0.18.9",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.18.9.tgz",
+      "integrity": "sha512-8ad9RyoKsb/g8/yLFE+KAlP+DhbCTRUNi/V9XGsxn0R+trJJltNwzcDNo0q/DEkOy5fQUQTAQyCXCYSE+OakTQ==",
       "funding": [
         "https://opencollective.com/katex",
         "https://github.com/sponsors/katex"
diff --git a/package.json b/package.json
index 04afea2..5ecffa3 100644
--- a/package.json
+++ b/package.json
@@ -170,7 +170,7 @@
     "@lezer/highlight": "^1.2.3",
     "@lezer/markdown": "^1.7.2",
     "codemirror": "^6.0.2",
-    "katex": "^0.18.7",
+    "katex": "^0.18.9",
     "react": "^19.0.0",
     "react-dom": "^19.0.0"
   },