diff --git a/package-lock.json b/package-lock.json
index 00bde24..98303ae 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2928,9 +2928,9 @@
       "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk="
     },
     "clipboard": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/clipboard/-/clipboard-2.0.4.tgz",
-      "integrity": "sha512-Vw26VSLRpJfBofiVaFb/I8PVfdI1OxKcYShe6fm0sP/DtmiWQNCjhM/okTvdCo0G+lMMm1rMYbk4IK4x1X+kgQ==",
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/clipboard/-/clipboard-2.0.6.tgz",
+      "integrity": "sha512-g5zbiixBRk/wyKakSwCKd7vQXDjFnAMGHoEyBogG/bw9kTD9GvdAvaoRR1ALcEzt3pVKxZR0pViekPMIS0QyGg==",
       "optional": true,
       "requires": {
         "good-listener": "^1.2.2",
@@ -11634,9 +11634,9 @@
       }
     },
     "prismjs": {
-      "version": "1.16.0",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.16.0.tgz",
-      "integrity": "sha512-OA4MKxjFZHSvZcisLGe14THYsug/nF6O1f0pAJc0KN0wTyAcLqmsbE+lTGKSpyh+9pEW57+k6pg2AfYR+coyHA==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.21.0.tgz",
+      "integrity": "sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==",
       "requires": {
         "clipboard": "^2.0.0"
       }
diff --git a/package.json b/package.json
index bd0acbf..d724856 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "gatsby-source-filesystem": "^2.0.33",
     "gatsby-transformer-remark": "^2.3.12",
     "gatsby-transformer-sharp": "^2.1.19",
-    "prismjs": "^1.16.0",
+    "prismjs": "^1.21.0",
     "react": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-helmet": "^5.2.1",
diff --git a/yarn.lock b/yarn.lock
index eede972..50694df 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9197,10 +9197,10 @@ pretty-error@^2.1.1:
     renderkid "^2.0.1"
     utila "~0.4"
 
-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"