diff --git a/umap/static/umap/js/modules/ui/dialog.js b/umap/static/umap/js/modules/ui/dialog.js
index 417f82bc..01204180 100644
--- a/umap/static/umap/js/modules/ui/dialog.js
+++ b/umap/static/umap/js/modules/ui/dialog.js
@@ -19,8 +19,18 @@ export default class Dialog {
     this.container.close()
   }
 
+  currentZIndex() {
+    return Math.max(
+      ...Array.from(document.querySelectorAll('dialog')).map(
+        (el) => window.getComputedStyle(el).getPropertyValue('z-index') || 0
+      )
+    )
+  }
+
   open({ className, content, modal } = {}) {
     this.container.innerHTML = ''
+    const currentZIndex = this.currentZIndex()
+    if (currentZIndex) this.container.style.zIndex = currentZIndex + 1
     if (modal) this.container.showModal()
     else this.container.show()
     if (className) {