diff --git a/package.json b/package.json
index f55aa01..5ca5859 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "dayjs": "^1.8.12",
     "i18next": "^15.0.7",
     "prism-themes": "^1.1.0",
-    "prismjs": "^1.16.0",
+    "prismjs": "^1.21.0",
     "react": "^16.8.4",
     "react-dom": "^16.8.4",
     "react-helmet": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index 9344d26..b0374cb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5417,10 +5417,10 @@ prism-themes@^1.1.0:
   resolved "https://registry.yarnpkg.com/prism-themes/-/prism-themes-1.1.0.tgz#9f4fadf0c9c7ee415773717ea69c2aaa25aedbfd"
   integrity sha512-xBkflbKbstGGasW3P68KQzAuObLQeH//I5mn37jKVHVDrRLp4Xct/n8F/tV5h+CKIMa3nDAZ2q0bt8ItSiS72A==
 
-prismjs@^1.16.0:
-  version "1.17.1"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.17.1.tgz#e669fcbd4cdd873c35102881c33b14d0d68519be"
-  integrity sha512-PrEDJAFdUGbOP6xK/UsfkC5ghJsPJviKgnQOoxaDbBjwc8op68Quupwt1DeAFoG8GImPhiKXAvvsH7wDSLsu1Q==
+prismjs@^1.21.0:
+  version "1.21.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.21.0.tgz#36c086ec36b45319ec4218ee164c110f9fc015a3"
+  integrity sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==
   optionalDependencies:
     clipboard "^2.0.0"