diff --git a/package-lock.json b/package-lock.json
index f4635ab..7c20d8e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -99,17 +99,6 @@
         "supports-color": "2.0.0"
       }
     },
-    "clipboard": {
-      "version": "1.7.1",
-      "resolved": "https://registry.npmjs.org/clipboard/-/clipboard-1.7.1.tgz",
-      "integrity": "sha1-Ng1taUbpmnof7zleQrqStem1oWs=",
-      "optional": true,
-      "requires": {
-        "good-listener": "1.2.2",
-        "select": "1.1.2",
-        "tiny-emitter": "2.0.2"
-      }
-    },
     "clone": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.3.tgz",
@@ -181,12 +170,6 @@
       "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
       "integrity": "sha1-BuHqgILCyxTjmAbiLi9vdX+Srzk="
     },
-    "delegate": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/delegate/-/delegate-3.2.0.tgz",
-      "integrity": "sha512-IofjkYBZaZivn0V8nnsMJGBr4jVLxHDheKSW88PyxS5QC4Vo9ZbZVvhzlSxY87fVq3STR6r+4cGepyHkcWOQSw==",
-      "optional": true
-    },
     "ecstatic": {
       "version": "0.7.6",
       "resolved": "https://registry.npmjs.org/ecstatic/-/ecstatic-0.7.6.tgz",
@@ -271,15 +254,6 @@
         "path-is-absolute": "1.0.1"
       }
     },
-    "good-listener": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/good-listener/-/good-listener-1.2.2.tgz",
-      "integrity": "sha1-1TswzfkxPf+33JoNR3CWqm0UXFA=",
-      "optional": true,
-      "requires": {
-        "delegate": "3.2.0"
-      }
-    },
     "graceful-fs": {
       "version": "4.1.11",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.11.tgz",
@@ -630,12 +604,9 @@
       }
     },
     "prismjs": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.11.0.tgz",
-      "integrity": "sha1-KXrvM+t5Qhv9sZJzpQkspRWXDSk=",
-      "requires": {
-        "clipboard": "1.7.1"
-      }
+      "version": "1.25.0",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.25.0.tgz",
+      "integrity": "sha512-WCjJHl1KEWbnkQom1+SzftbtXMKQoezOCYs5rECqMN+jP+apI7ftoflyqigqzopSO3hMhTEb0mFClA8lkolgEg=="
     },
     "qs": {
       "version": "2.3.3",
@@ -681,12 +652,6 @@
         "glob": "7.1.2"
       }
     },
-    "select": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/select/-/select-1.1.2.tgz",
-      "integrity": "sha1-DnNQrN7ICxEIUoeG7B1EGNEbOW0=",
-      "optional": true
-    },
     "sigmund": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
@@ -737,12 +702,6 @@
         "enable": "1.3.2"
       }
     },
-    "tiny-emitter": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/tiny-emitter/-/tiny-emitter-2.0.2.tgz",
-      "integrity": "sha512-2NM0auVBGft5tee/OxP4PI3d8WItkDM+fPnaRAVo6xTDI2knbz9eC5ArWGqtGlYqiH3RU5yMpdyTTO7MguC4ow==",
-      "optional": true
-    },
     "toml": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/toml/-/toml-2.3.3.tgz",
diff --git a/package.json b/package.json
index 2be828a..6190b10 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "metalsmith-layouts": "^1.4.2",
     "metalsmith-markdown": "^0.2.1",
     "metalsmith-permalinks": "^0.4.0",
-    "prismjs": "^1.3.0"
+    "prismjs": "^1.25.0"
   },
   "scripts": {
     "start": "./run build-book && ./run serve"