diff --git a/bookmarks/toolbar/development/python/explore-flask-1-0-documentation_xr90.json b/bookmarks/toolbar/development/python/explore-flask-1-0-documentation_xr90.json
new file mode 100644
index 0000000..742fb65
--- /dev/null
+++ b/bookmarks/toolbar/development/python/explore-flask-1-0-documentation_xr90.json
@@ -0,0 +1,4 @@
+{
+  "title": "Explore Flask 1.0 documentation",
+  "url": "http://exploreflask.com/en/latest/preface.html"
+}
\ No newline at end of file