diff --git a/npl3.json b/npl3.json
index 02d0bae..c3e9663 100644
--- a/npl3.json
+++ b/npl3.json
@@ -1,6 +1,7 @@
 {
     "_description": "NPL Bowden",
     "target": "kasli",
+    "min_artiq_version": "6.0",
     "variant": "npl3",
     "hw_rev": "v2.0",
     "ext_ref_frequency": 10e6,
diff --git a/npl4.json b/npl4.json
index d775684..6ee3851 100644
--- a/npl4.json
+++ b/npl4.json
@@ -1,6 +1,7 @@
 {
     "_description": "NPL Bowden",
     "target": "kasli",
+    "min_artiq_version": "6.0",
     "variant": "npl4",
     "hw_rev": "v2.0",
     "ext_ref_frequency": 10e6,
diff --git a/ptb9.json b/ptb9.json
index 219f658..1553aa9 100644
--- a/ptb9.json
+++ b/ptb9.json
@@ -1,6 +1,7 @@
 {
     "_description": "PTB Fürst/Rubasch/Mehlstäubler",
     "target": "kasli",
+    "min_artiq_version": "6.0",
     "variant": "ptb9",
     "hw_rev": "v2.0",
     "ext_ref_frequency": 100e6,