diff --git a/.changeset/shy-rings-mix.md b/.changeset/shy-rings-mix.md
new file mode 100644
index 0000000000..de322fdf85
--- /dev/null
+++ b/.changeset/shy-rings-mix.md
@@ -0,0 +1,5 @@
+---
+'@backstage/core-app-api': patch
+---
+
+Fix SAML session schema to no longer require the (deprecated) id, to unbreak session data storage.
diff --git a/packages/core-app-api/src/apis/implementations/auth/saml/types.ts b/packages/core-app-api/src/apis/implementations/auth/saml/types.ts
index 55b278b429..e5e32e3457 100644
--- a/packages/core-app-api/src/apis/implementations/auth/saml/types.ts
+++ b/packages/core-app-api/src/apis/implementations/auth/saml/types.ts
@@ -34,7 +34,6 @@ export const samlSessionSchema: z.ZodSchema<SamlSession> = z.object({
     picture: z.string().optional(),
   }),
   backstageIdentity: z.object({
-    id: z.string(),
     token: z.string(),
     identity: z.object({
       type: z.literal('user'),