diff --git a/plugins/plugins.json b/plugins/plugins.json
index a08704f11a..47691ceb74 100644
--- a/plugins/plugins.json
+++ b/plugins/plugins.json
@@ -73,7 +73,7 @@
     },
     "ofl": {
       "name": "Open Fixture Library JSON",
-      "exportPluginVersion": "12.4.0",
+      "exportPluginVersion": "12.4.1",
       "exportTests": []
     },
     "op-z": {
diff --git a/schemas/fixture-redirect.json b/schemas/fixture-redirect.json
index 573bba8fb1..8f3ffae34d 100644
--- a/schemas/fixture-redirect.json
+++ b/schemas/fixture-redirect.json
@@ -2,7 +2,7 @@
   "$schema": "http://json-schema.org/draft-07/schema#",
   "$id": "https://raw.githubusercontent.com/OpenLightingProject/open-fixture-library/master/schemas/fixture-redirect.json",
 
-  "version": "12.4.0",
+  "version": "12.4.1",
 
   "type": "object",
   "properties": {
diff --git a/schemas/fixture.json b/schemas/fixture.json
index 4bb3b2a71c..dca8a37daa 100644
--- a/schemas/fixture.json
+++ b/schemas/fixture.json
@@ -2,7 +2,7 @@
   "$schema": "http://json-schema.org/draft-07/schema#",
   "$id": "https://raw.githubusercontent.com/OpenLightingProject/open-fixture-library/master/schemas/fixture.json",
 
-  "version": "12.4.0",
+  "version": "12.4.1",
 
   "type": "object",
   "properties": {
diff --git a/schemas/gobo.json b/schemas/gobo.json
index 5fa864be6c..748cd3d071 100644
--- a/schemas/gobo.json
+++ b/schemas/gobo.json
@@ -2,7 +2,7 @@
   "$schema": "http://json-schema.org/draft-07/schema#",
   "$id": "https://raw.githubusercontent.com/OpenLightingProject/open-fixture-library/master/schemas/gobo.json",
 
-  "version": "12.4.0",
+  "version": "12.4.1",
 
   "type": "object",
   "properties": {
diff --git a/schemas/manufacturers.json b/schemas/manufacturers.json
index ada56ac726..3ffbf1ea3f 100644
--- a/schemas/manufacturers.json
+++ b/schemas/manufacturers.json
@@ -2,7 +2,7 @@
   "$schema": "http://json-schema.org/draft-07/schema#",
   "$id": "https://raw.githubusercontent.com/OpenLightingProject/open-fixture-library/master/schemas/manufacturers.json",
 
-  "version": "12.4.0",
+  "version": "12.4.1",
 
   "type": "object",
   "properties": {
@@ -24,8 +24,8 @@
       "website": { "$ref": "definitions.json#/urlString" },
       "rdmId": {
         "type": "integer",
-        "minimum": 0,
-        "maximum": 65536
+        "minimum": 1,
+        "maximum": 32767
       }
     },
     "required": ["name"],