diff --git a/package.json b/package.json
index 3953e8d..f8a230a 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "@ui5/webcomponents": "^1.0.0-rc.2",
     "lit-element": "^2.2.1",
     "lit-html": "^1.1.2",
-    "prismjs": "^1.17.1",
+    "prismjs": "^1.21.0",
     "xstate": "^4.6.7"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index fbb8ecc..2ef2458 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8464,7 +8464,14 @@ pretty-hrtime@^1.0.3:
   resolved "https://registry.yarnpkg.com/pretty-hrtime/-/pretty-hrtime-1.0.3.tgz#b7e3ea42435a4c9b2759d99e0f201eb195802ee1"
   integrity sha1-t+PqQkNaTJsnWdmeDyAesZWALuE=
 
-prismjs@^1.17.1, prismjs@^1.8.4, prismjs@~1.17.0:
+prismjs@^1.21.0, prismjs@^1.8.4:
+  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"
+
+prismjs@~1.17.0:
   version "1.17.1"
   resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.17.1.tgz#e669fcbd4cdd873c35102881c33b14d0d68519be"
   integrity sha512-PrEDJAFdUGbOP6xK/UsfkC5ghJsPJviKgnQOoxaDbBjwc8op68Quupwt1DeAFoG8GImPhiKXAvvsH7wDSLsu1Q==