diff --git a/package-lock.json b/package-lock.json
index 4ab2988..3730c7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2274,9 +2274,9 @@
       "dev": true
     },
     "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==",
       "dev": true,
       "optional": true,
       "requires": {
@@ -7193,9 +7193,9 @@
       }
     },
     "prismjs": {
-      "version": "1.17.1",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.17.1.tgz",
-      "integrity": "sha512-PrEDJAFdUGbOP6xK/UsfkC5ghJsPJviKgnQOoxaDbBjwc8op68Quupwt1DeAFoG8GImPhiKXAvvsH7wDSLsu1Q==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.21.0.tgz",
+      "integrity": "sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==",
       "dev": true,
       "requires": {
         "clipboard": "^2.0.0"
diff --git a/package.json b/package.json
index a89df9b..b506b3d 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "magicbook-codesplit": "^0.1.6",
     "magicbook-webpack": "0.0.4",
     "p5": "^0.5.9",
-    "prismjs": "^1.5.1",
+    "prismjs": "^1.21.0",
     "react": "^15.3.2",
     "react-dom": "^15.3.2",
     "terser-webpack-plugin": "^2.3.5",