diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5451bee..94c1796 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Display plain Pleroma version rather than the Mastodon-compatible string
+- Fix some insular instances appearing on the graph
 
 ### Security
 
diff --git a/backend/lib/backend/api.ex b/backend/lib/backend/api.ex
index cabd619..39d6cff 100644
--- a/backend/lib/backend/api.ex
+++ b/backend/lib/backend/api.ex
@@ -75,6 +75,8 @@ defmodule Backend.Api do
     user_threshold = get_config(:personal_instance_threshold)
 
     Instance
+    # filter down to instances that have edges
+    |> join(:inner, [i], e in Edge, on: i.domain == e.source_domain or i.domain == e.target_domain)
     |> where(
       [i],
       not is_nil(i.x) and not is_nil(i.y) and not is_nil(i.user_count) and