diff --git a/bonn.json b/bonn.json
index 4b3bd0e..d97773b 100644
--- a/bonn.json
+++ b/bonn.json
@@ -1,6 +1,7 @@
 {
     "_description": "Bonn",
     "target": "kasli",
+    "min_artiq_version": "6.0",
     "variant": "bonn",
     "hw_rev": "v2.0",
     "ext_ref_frequency": 10e6,
diff --git a/ptb12.json b/ptb12.json
index fd0f0a2..395914e 100644
--- a/ptb12.json
+++ b/ptb12.json
@@ -1,6 +1,7 @@
 {
     "_description": "PTB Krinner",
     "target": "kasli",
+    "min_artiq_version": "6.0",
     "variant": "ptb12",
     "hw_rev": "v2.0",
     "ext_ref_frequency": 10e6,