diff --git a/apis/oidcclients/definition.yaml b/apis/oidcclients/definition.yaml
index 96de679..dc909bd 100644
--- a/apis/oidcclients/definition.yaml
+++ b/apis/oidcclients/definition.yaml
@@ -36,17 +36,19 @@ spec:
                 description: Exact OIDC callback URIs. Zitadel does not support wildcard redirects.
                 type: array
                 minItems: 1
-                uniqueItems: true
+                maxItems: 32
                 items:
                   type: string
                   format: uri
+                  maxLength: 2048
               postLogoutRedirectUris:
                 description: Exact destinations allowed after logout.
                 type: array
-                uniqueItems: true
+                maxItems: 32
                 items:
                   type: string
                   format: uri
+                  maxLength: 2048
               connectionSecretRef:
                 description: Secret written in the OIDCClient namespace with generated client credentials.
                 type: object