diff --git a/package.json b/package.json
index d2aeef2..8d52cba 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "gatsby-transformer-remark": "^2.6.51",
     "gatsby-transformer-sharp": "^2.3.14",
     "gatsby-transformer-yaml": "2.4.10",
-    "prismjs": "^1.19.0",
+    "prismjs": "^1.23.0",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
     "react-helmet": "^6.1.0",
diff --git a/yarn.lock b/yarn.lock
index 9795824..fdad7ae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11046,10 +11046,10 @@ pretty-format@^25.5.0:
     ansi-styles "^4.0.0"
     react-is "^16.12.0"
 
-prismjs@^1.19.0:
-  version "1.20.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.20.0.tgz#9b685fc480a3514ee7198eac6a3bf5024319ff03"
-  integrity sha512-AEDjSrVNkynnw6A+B1DsFkd6AVdTnp+/WoUixFRULlCLZVRZlVQMVWio/16jv7G1FscUxQxOQhWwApgbnxr6kQ==
+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"