1 files changed, 10 insertions, 2 deletions

diff --git a/src/include/anastasis.h b/src/include/anastasis.h
index f9782fd..8443eb6 100644
--- a/src/include/anastasis.h
+++ b/src/include/anastasis.h
@@ -138,7 +138,14 @@ enum ANASTASIS_ChallengeStatus
    * challenge in time. The request should be repeated
    * later and may then succeed.
    */
-  ANASTASIS_CHALLENGE_STATUS_AUTH_TIMEOUT
+  ANASTASIS_CHALLENGE_STATUS_AUTH_TIMEOUT,
+
+  /**
+   * Plugin-specific ("external") instructions for how to solve the
+   * challenge are provided.
+   */
+  ANASTASIS_CHALLENGE_STATUS_EXTERNAL_INSTRUCTIONS
+
 
 };
 
@@ -166,7 +173,8 @@ struct ANASTASIS_ChallengeStartResponse
 
     /**
      * Challenge details provided if
-     * @e cs is #ANASTASIS_CHALLENGE_STATUS_INSTRUCTIONS.
+     * @e cs is #ANASTASIS_CHALLENGE_STATUS_INSTRUCTIONS
+     * or #ANASTASIS_CHALLENGE_STATUS_EXTERNAL_INSTRUCTIONS.
      */
     struct
     {