diff --git a/package.json b/package.json
index 7a72d5dc..77a9e380 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
   "devDependencies": {
     "@antora/cli": "^3.1.2",
     "@antora/site-generator": "^3.1.2",
-    "@sntke/antora-mermaid-extension": "^0.0.3",
+    "@sntke/antora-mermaid-extension": "^0.0.6",
     "http-server": "^14.1.1",
     "postcss": "^8.4.25",
     "postcss-clean": "^1.2.2",