diff --git a/package.json b/package.json
index 1e4c278..0ad82f1 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "gatsby-source-filesystem": "^1.4.12",
     "gatsby-transformer-remark": "^1.7.7",
     "just-safe-get": "^2.0.0",
-    "prismjs": "^1.15.0",
+    "prismjs": "^1.23.0",
     "react": "^16.0.0",
     "react-dom": "^16.0.0",
     "react-helmet": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index a4d3ee5..c3cf99b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9580,10 +9580,10 @@ pretty-error@^2.1.1:
     renderkid "^2.0.1"
     utila "~0.4"
 
-prismjs@^1.15.0:
-  version "1.15.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.15.0.tgz#8801d332e472091ba8def94976c8877ad60398d9"
-  integrity sha512-Lf2JrFYx8FanHrjoV5oL8YHCclLQgbJcVZR+gikGGMqz6ub5QVWDTM6YIwm3BuPxM/LOV+rKns3LssXNLIf+DA==
+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"