diff --git a/lib/core/models.dart b/lib/core/models.dart
index e23c04cc..20ff46f6 100644
--- a/lib/core/models.dart
+++ b/lib/core/models.dart
@@ -107,6 +107,12 @@ enum UsbPid {
 @freezed
 class Version with _$Version implements Comparable<Version> {
   const Version._();
+  @Assert('major >= 0')
+  @Assert('major < 256')
+  @Assert('minor >= 0')
+  @Assert('minor < 256')
+  @Assert('patch >= 0')
+  @Assert('patch < 256')
   const factory Version(int major, int minor, int patch) = _Version;
 
   factory Version.fromJson(List<dynamic> values) {
diff --git a/lib/core/models.freezed.dart b/lib/core/models.freezed.dart
index 3f269401..91e5f4ac 100755
--- a/lib/core/models.freezed.dart
+++ b/lib/core/models.freezed.dart
@@ -106,7 +106,14 @@ class __$$_VersionCopyWithImpl<$Res> extends _$VersionCopyWithImpl<$Res>
 /// @nodoc
 
 class _$_Version extends _Version {
-  const _$_Version(this.major, this.minor, this.patch) : super._();
+  const _$_Version(this.major, this.minor, this.patch)
+      : assert(major >= 0),
+        assert(major < 256),
+        assert(minor >= 0),
+        assert(minor < 256),
+        assert(patch >= 0),
+        assert(patch < 256),
+        super._();
 
   @override
   final int major;