diff --git a/apps/web/package.json b/apps/web/package.json
index 0eec080..ba96366 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -26,7 +26,7 @@
     "@types/prismjs": "1.26.5",
     "autoprefixer": "10.4.21",
     "bits-ui": "1.3.3",
-    "katex": "0.16.25",
+    "katex": "0.16.27",
     "mdsvex": "0.12.5",
     "misskey-js": "2025.12.0",
     "prismjs": "1.30.0",
diff --git a/yarn.lock b/yarn.lock
index e97ffea..5f08261 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3735,14 +3735,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"katex@npm:0.16.25":
-  version: 0.16.25
-  resolution: "katex@npm:0.16.25"
+"katex@npm:0.16.27":
+  version: 0.16.27
+  resolution: "katex@npm:0.16.27"
   dependencies:
     commander: "npm:^8.3.0"
   bin:
     katex: cli.js
-  checksum: 10c0/5bb4b1cd914b76d5efb01ee054c1a221ac723be1e38fb260264c6e253036943d301c1741cbf64f840689c6b3942bce21a6da6637de846a428e4c661dc8ee46ab
+  checksum: 10c0/f5f9a8c9f422c8f798081cc3483d44f112d75f65968a643572d9cfa910b9ebcf47f3563111764b91b9298f32776dfc04ebaf950f515ff3f406f058a0b9a33c9a
   languageName: node
   linkType: hard
 
@@ -6298,7 +6298,7 @@ __metadata:
     bits-ui: "npm:1.3.3"
     d3-scale: "npm:4.0.2"
     deepmerge: "npm:4.3.1"
-    katex: "npm:0.16.25"
+    katex: "npm:0.16.27"
     layerchart: "npm:1.0.12"
     lucide-svelte: "npm:0.562.0"
     mdsvex: "npm:0.12.5"