diff --git a/packages/mermaid/package.json b/packages/mermaid/package.json
index edb069d98e..1175761ac8 100644
--- a/packages/mermaid/package.json
+++ b/packages/mermaid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mermaid",
-  "version": "10.9.0",
+  "version": "10.9.1",
   "description": "Markdown-ish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "type": "module",
   "module": "./dist/mermaid.core.mjs",
diff --git a/packages/mermaid/src/diagrams/block/blockDB.ts b/packages/mermaid/src/diagrams/block/blockDB.ts
index b343a110c7..a9ccdaa0c5 100644
--- a/packages/mermaid/src/diagrams/block/blockDB.ts
+++ b/packages/mermaid/src/diagrams/block/blockDB.ts
@@ -20,7 +20,7 @@ const config = getConfig();
 
 let classes = {} as Record<string, ClassDef>;
 
-const sanitizeText = (txt) => common.sanitizeText(txt, config);
+const sanitizeText = (txt:string) => common.sanitizeText(txt, config);
 
 /**
  * Called when the parser comes across a (style) class definition