diff --git a/.changeset/large-planes-punch.md b/.changeset/large-planes-punch.md
new file mode 100644
index 0000000000..3216653eb9
--- /dev/null
+++ b/.changeset/large-planes-punch.md
@@ -0,0 +1,5 @@
+---
+'@backstage/backend-defaults': patch
+---
+
+Fix for `jose` types
diff --git a/packages/backend-defaults/src/entrypoints/auth/plugin/keys/DatabasePluginKeySource.ts b/packages/backend-defaults/src/entrypoints/auth/plugin/keys/DatabasePluginKeySource.ts
index e6a7bbcfc6..562086a07f 100644
--- a/packages/backend-defaults/src/entrypoints/auth/plugin/keys/DatabasePluginKeySource.ts
+++ b/packages/backend-defaults/src/entrypoints/auth/plugin/keys/DatabasePluginKeySource.ts
@@ -102,7 +102,7 @@ export class DatabasePluginKeySource implements PluginKeySource {
 
       await this.keyStore.addKey({
         id: kid,
-        key: publicKey as InternalKey,
+        key: publicKey as unknown as InternalKey,
         expiresAt: new Date(
           Date.now() +
             this.keyDurationSeconds *