diff --git a/unshackle/core/drm/playready.py b/unshackle/core/drm/playready.py
index 0e97adae..479b6576 100644
--- a/unshackle/core/drm/playready.py
+++ b/unshackle/core/drm/playready.py
@@ -492,9 +492,12 @@ class PlayReady:
                         kid_count=len(required_kids),
                     )
                     try:
-                        license_res = licence(challenge=challenge, pssh_b64=pssh_b64)
+                        license_res = licence(challenge=challenge, pssh_b64=pssh_b64, session_id=session_id)
                     except TypeError:
-                        license_res = licence(challenge=challenge)
+                        try:
+                            license_res = licence(challenge=challenge, pssh_b64=pssh_b64)
+                        except TypeError:
+                            license_res = licence(challenge=challenge)
                     if isinstance(license_res, bytes):
                         license_str = license_res.decode(errors="ignore")
                     else: