diff --git a/package.json b/package.json
index 4dd430e..f06e693 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   "dependencies": {
     "bpmn-js": "^6.4.0",
     "core-js": "^3.6.4",
-    "prismjs": "^1.19.0",
+    "prismjs": "^1.21.0",
     "register-service-worker": "^1.6.2",
     "vue": "^2.6.11",
     "vue-apollo": "^3.0.0-beta.11",
diff --git a/yarn.lock b/yarn.lock
index 54f06a4..2e03338 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9189,10 +9189,10 @@ pretty-error@^2.0.2:
     renderkid "^2.0.1"
     utila "~0.4"
 
-prismjs@^1.19.0:
-  version "1.19.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.19.0.tgz#713afbd45c3baca4b321569f2df39e17e729d4dc"
-  integrity sha512-IVFtbW9mCWm9eOIaEkNyo2Vl4NnEifis2GQ7/MLRG5TQe6t+4Sj9J5QWI9i3v+SS43uZBlCAOn+zYTVYQcPXJw==
+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"