diff --git a/web/app/themes/wpadminref/package.json b/web/app/themes/wpadminref/package.json
index 53a109c..6bd2ad0 100644
--- a/web/app/themes/wpadminref/package.json
+++ b/web/app/themes/wpadminref/package.json
@@ -11,7 +11,7 @@
     "clipboard": "^2.0.4",
     "lint": "^0.7.0",
     "menuspy": "^1.3.0",
-    "prismjs": "^1.17.1"
+    "prismjs": "^1.23.0"
   },
   "devDependencies": {
     "@wordpress/scripts": "^3.2.1"
diff --git a/web/app/themes/wpadminref/yarn.lock b/web/app/themes/wpadminref/yarn.lock
index ffad6c7..9bc077e 100644
--- a/web/app/themes/wpadminref/yarn.lock
+++ b/web/app/themes/wpadminref/yarn.lock
@@ -5653,9 +5653,9 @@ pretty-format@^24.9.0:
     ansi-styles "^3.2.0"
     react-is "^16.8.4"
 
-prismjs@^1.17.1:
-  version "1.17.1"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.17.1.tgz#e669fcbd4cdd873c35102881c33b14d0d68519be"
+prismjs@^1.23.0:
+  version "1.23.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.23.0.tgz#d3b3967f7d72440690497652a9d40ff046067f33"
   optionalDependencies:
     clipboard "^2.0.0"