diff --git a/packages/mermaid-layout-elk/package.json b/packages/mermaid-layout-elk/package.json
index 68c47023c..888cb56d9 100644
--- a/packages/mermaid-layout-elk/package.json
+++ b/packages/mermaid-layout-elk/package.json
@@ -31,7 +31,8 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "elkjs": "^0.9.3"
+    "elkjs": "^0.9.3",
+    "d3": "^7.9.0"
   },
   "devDependencies": {
     "mermaid": "workspace:^"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 653108510..98b7a0267 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -436,6 +436,9 @@ importers:
 
   packages/mermaid-layout-elk:
     dependencies:
+      d3:
+        specifier: ^7.9.0
+        version: 7.9.0
       elkjs:
         specifier: ^0.9.3
         version: 0.9.3