diff --git a/ptb3master.json b/ptb3master.json
index 864b5b3..2f6effb 100644
--- a/ptb3master.json
+++ b/ptb3master.json
@@ -2,7 +2,7 @@
     "_description": "PTB 4.43 with backplane adapter and 4 Urukuls",
     "target": "kasli",
     "variant": "ptb3master",
-    "hw_rev": "v2.0",
+    "hw_rev": "v1.1",
     "base": "master",
     "_ext_ref_frequency": 100e6,
     "core_addr": "10.34.16.100",