diff --git a/.changeset/many-sloths-shop.md b/.changeset/many-sloths-shop.md
new file mode 100644
index 00000000000..353011dc53a
--- /dev/null
+++ b/.changeset/many-sloths-shop.md
@@ -0,0 +1,15 @@
+---
+"graphql-language-service-server": patch
+"graphql-language-service": patch
+---
+
+fix(graphql-language-service-server): allow getDefinition to work for unions
+
+Fixes the issue where a schema like the below won't allow you to click through to X.
+
+```graphql```
+union X = A | B
+type A { x: String }
+type B { x: String }
+type Query { a: X }
+```