diff --git a/packages/mirage-unikernel-hannes-nqsb-io-hvt.0.0.2/opam b/packages/mirage-unikernel-hannes-nqsb-io-hvt.0.0.2/opam
index 61a696c..64da812 100644
--- a/packages/mirage-unikernel-hannes-nqsb-io-hvt.0.0.2/opam
+++ b/packages/mirage-unikernel-hannes-nqsb-io-hvt.0.0.2/opam
@@ -8,9 +8,9 @@ depends: [ "arp" { >= "2.3.0" & < "3.0.0"}
            "decompress" { >= "0.5"}
            "ethernet" { >= "2.2.0" & < "3.0.0"}
            "functoria-runtime" 
-           "irmin" { >= "2.0.0"}
-           "irmin-mirage" { >= "2.0.0"}
-           "irmin-mirage-git" { >= "2.0.0"}
+           "irmin" { >= "2.0.0" & < "2.3.0"}
+           "irmin-mirage" { >= "2.0.0" & < "2.3.0"}
+           "irmin-mirage-git" { >= "2.0.0" & < "2.3.0"}
            "logs" 
            "logs-syslog" 
            "lwt" 
diff --git a/packages/mirage-unikernel-roburio-hvt.0.0.2/opam b/packages/mirage-unikernel-roburio-hvt.0.0.2/opam
index 207ded8..ffc23ee 100644
--- a/packages/mirage-unikernel-roburio-hvt.0.0.2/opam
+++ b/packages/mirage-unikernel-roburio-hvt.0.0.2/opam
@@ -8,9 +8,9 @@ depends: [ "arp" { >= "2.3.0" & < "3.0.0"}
            "decompress" { >= "0.5"}
            "ethernet" { >= "2.2.0" & < "3.0.0"}
            "functoria-runtime" 
-           "irmin" { >= "2.0.0"}
-           "irmin-mirage" { >= "2.0.0"}
-           "irmin-mirage-git" { >= "2.0.0"}
+           "irmin" { >= "2.0.0" & < "2.3.0"}
+           "irmin-mirage" { >= "2.0.0" & < "2.3.0"}
+           "irmin-mirage-git" { >= "2.0.0" & < "2.3.0"}
            "logs" 
            "logs-syslog" 
            "lwt"