diff --git a/package.json b/package.json
index 8818b49..e2e00d7 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "lodash.isequal": "^4.5.0",
     "lodash.omit": "^4.5.0",
     "lodash.upperfirst": "^4.3.1",
-    "prismjs": "^1.15.0",
+    "prismjs": "^1.21.0",
     "react": "^16.7.0",
     "react-app-polyfill": "^0.2.0",
     "react-dev-utils": "^7.0.1",
diff --git a/yarn.lock b/yarn.lock
index ce41bfc..3897768 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7325,10 +7325,10 @@ pretty-format@^23.6.0:
     ansi-regex "^3.0.0"
     ansi-styles "^3.2.0"
 
-prismjs@^1.15.0:
-  version "1.15.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.15.0.tgz#8801d332e472091ba8def94976c8877ad60398d9"
-  integrity sha512-Lf2JrFYx8FanHrjoV5oL8YHCclLQgbJcVZR+gikGGMqz6ub5QVWDTM6YIwm3BuPxM/LOV+rKns3LssXNLIf+DA==
+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"