diff --git a/package.json b/package.json
index f0558a03e96..580406a26d6 100644
--- a/package.json
+++ b/package.json
@@ -248,7 +248,7 @@
     "mousetrap-global-bind": "1.1.0",
     "nodemon": "2.0.2",
     "papaparse": "4.6.3",
-    "prismjs": "1.19.0",
+    "prismjs": "1.21.0",
     "prop-types": "15.7.2",
     "rc-cascader": "1.0.1",
     "re-resizable": "^6.2.0",
diff --git a/yarn.lock b/yarn.lock
index dcba7c9fe55..deb75e05efd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -20889,14 +20889,14 @@ pretty-hrtime@^1.0.3:
   resolved "https://registry.yarnpkg.com/pretty-hrtime/-/pretty-hrtime-1.0.3.tgz#b7e3ea42435a4c9b2759d99e0f201eb195802ee1"
   integrity sha1-t+PqQkNaTJsnWdmeDyAesZWALuE=
 
-prismjs@1.19.0:
-  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, 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@^1.8.4, prismjs@~1.17.0:
+prismjs@~1.17.0:
   version "1.17.1"
   resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.17.1.tgz#e669fcbd4cdd873c35102881c33b14d0d68519be"
   integrity sha512-PrEDJAFdUGbOP6xK/UsfkC5ghJsPJviKgnQOoxaDbBjwc8op68Quupwt1DeAFoG8GImPhiKXAvvsH7wDSLsu1Q==