diff --git a/package.json b/package.json
index 19cbdb0..7dd6235 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "gatsby-source-filesystem": "^2.3.8",
     "gatsby-transformer-remark": "^2.8.13",
     "gatsby-transformer-sharp": "^2.5.3",
-    "prismjs": "^1.21.0",
+    "prismjs": "^1.23.0",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
     "react-helmet": "^5.2.1",
diff --git a/yarn.lock b/yarn.lock
index 7805db3..4d9fcab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11901,10 +11901,10 @@ pretty-format@^25.5.0:
     ansi-styles "^4.0.0"
     react-is "^16.12.0"
 
-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==
+prismjs@^1.23.0:
+  version "1.23.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.23.0.tgz#d3b3967f7d72440690497652a9d40ff046067f33"
+  integrity sha512-c29LVsqOaLbBHuIbsTxaKENh1N2EQBOHaWv7gkHN4dgRbxSREqDnDbtFJYdpPauS4YCplMSNCABQ6Eeor69bAA==
   optionalDependencies:
     clipboard "^2.0.0"