diff --git a/.changeset/modern-beers-tickle.md b/.changeset/modern-beers-tickle.md
new file mode 100644
index 0000000000..6ad9cc872d
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+++ b/.changeset/modern-beers-tickle.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-auth-backend': patch
+---
+
+Only use settings that have a value when creating a new FirestoreKeyStore instance