diff --git a/package.json b/package.json
index d918157..1c3d46d 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "easy-peasy": "^2.4.0",
     "firebase": "^5.11.1",
     "materialize-css": "^1.0.0",
-    "prismjs": "^1.16.0",
+    "prismjs": "^1.21.0",
     "react": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-redux": "5.1.1",
diff --git a/yarn.lock b/yarn.lock
index f818746..064d9ba 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8208,10 +8208,10 @@ pretty-format@^23.6.0:
     ansi-regex "^3.0.0"
     ansi-styles "^3.2.0"
 
-prismjs@^1.16.0:
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.16.0.tgz#406eb2c8aacb0f5f0f1167930cb83835d10a4308"
-  integrity sha512-OA4MKxjFZHSvZcisLGe14THYsug/nF6O1f0pAJc0KN0wTyAcLqmsbE+lTGKSpyh+9pEW57+k6pg2AfYR+coyHA==
+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"