diff --git a/source/onnx.js b/source/onnx.js
index cd1dc55977..4872cdb0e8 100644
--- a/source/onnx.js
+++ b/source/onnx.js
@@ -432,6 +432,11 @@ onnx.Attribute = class {
         this._description = attribute.doc_string || '';
         this._type = null;
         this._value = null;
+        if (attribute.ref_attr_name) {
+            this._value = attribute.ref_attr_name;
+            this._type = 'reference';
+            return;
+        }
         switch (attribute.type) {
             case onnx.AttributeType.UNDEFINED:
                 break;
@@ -1959,7 +1964,10 @@ onnx.JsonReader = class {
             if (value.type && this._attributeTypes.has(value.type)) {
                 value.type = this._attributeTypes.get(value.type);
             }
-            if (value.type === onnx.AttributeType.FLOATS || Array.isArray(value.floats)) {
+            if (value.refAttrName) {
+                value.ref_attr_name = value.refAttrName;
+                delete value.refAttrName;
+            } else if (value.type === onnx.AttributeType.FLOATS || Array.isArray(value.floats)) {
                 value.floats = value.floats.map((value) => parseFloat(value));
             } else if (value.type === onnx.AttributeType.INTS || Array.isArray(value.ints)) {
                 value.ints = value.ints.map((value) => parseInt(value, 10));
diff --git a/test/models.json b/test/models.json
index ee3afd2c38..90a6e907ad 100644
--- a/test/models.json
+++ b/test/models.json
@@ -3640,6 +3640,49 @@
     "format":   "ONNX v3",
     "link":     "https://github.com/lutzroeder/netron/issues/6"
   },
+  {
+    "type":     "onnx",
+    "target":   "issue_119.onnx",
+    "source":   "https://github.com/lutzroeder/netron/files/10349170/issue_119.onnx.zip[issue_119.onnx]",
+    "format":   "ONNX v4",
+    "link":     "https://github.com/lutzroeder/netron/issues/119"
+  },
+  {
+    "type":     "onnx",
+    "target":   "issue_168_if.pbtxt",
+    "source":   "https://github.com/lutzroeder/netron/files/10349183/issue_168.zip[issue_168_if.pbtxt]",
+    "format":   "ONNX v3",
+    "link":     "https://github.com/lutzroeder/netron/issues/168"
+  },
+  {
+    "type":     "onnx",
+    "target":   "issue_168_loop.pbtxt",
+    "source":   "https://github.com/lutzroeder/netron/files/10349183/issue_168.zip[issue_168_loop.pbtxt]",
+    "format":   "ONNX v3",
+    "link":     "https://github.com/lutzroeder/netron/issues/168"
+  },
+  {
+    "type":     "onnx",
+    "target":   "issue_168_scan.pbtxt",
+    "source":   "https://github.com/lutzroeder/netron/files/10349183/issue_168.zip[issue_168_scan.pbtxt]",
+    "format":   "ONNX v3",
+    "link":     "https://github.com/lutzroeder/netron/issues/168"
+  },
+  {
+    "type":     "onnx",
+    "target":   "issue_589.onnx.zip",
+    "source":   "https://github.com/lutzroeder/netron/files/10349190/issue_589.onnx.zip",
+    "format":   "ONNX v6",
+    "action":   "skip-render",
+    "link":     "https://github.com/lutzroeder/netron/issues/589"
+  },
+  {
+    "type":     "onnx",
+    "target":   "issue_845.onnx",
+    "source":   "https://github.com/lutzroeder/netron/files/10349194/issue_845.onnx.zip[issue_845.onnx]",
+    "format":   "ONNX v4",
+    "link":     "https://github.com/lutzroeder/netron/issues/6"
+  },
   {
     "type":     "onnx",
     "target":   "issue_1029.onnx",
@@ -3647,6 +3690,20 @@
     "format":   "ONNX v8",
     "link":     "https://github.com/lutzroeder/netron/issues/1029"
   },
+  {
+    "type":     "onnx",
+    "target":   "issue_1138.json",
+    "source":   "https://github.com/lutzroeder/netron/files/12343742/issue_1138.json.zip[issue_1138.json]",
+    "format":   "ONNX JSON v9",
+    "link":     "https://github.com/lutzroeder/netron/issues/1138"
+  },
+  {
+    "type":     "onnx",
+    "target":   "issue_1138.onnx",
+    "source":   "https://github.com/lutzroeder/netron/files/12343684/issue_1138.onnx.zip[issue_1138.onnx]",
+    "format":   "ONNX v9",
+    "link":     "https://github.com/lutzroeder/netron/issues/1138"
+  },
   {
     "type":     "onnx",
     "target":   "Kmeans.onnx",
@@ -3720,49 +3777,6 @@
     "format":   "ONNX JSON v8",
     "link":     "https://github.com/lutzroeder/netron/issues/6"
   },
-  {
-    "type":     "onnx",
-    "target":   "issue_119.onnx",
-    "source":   "https://github.com/lutzroeder/netron/files/10349170/issue_119.onnx.zip[issue_119.onnx]",
-    "format":   "ONNX v4",
-    "link":     "https://github.com/lutzroeder/netron/issues/119"
-  },
-  {
-    "type":     "onnx",
-    "target":   "issue_168_if.pbtxt",
-    "source":   "https://github.com/lutzroeder/netron/files/10349183/issue_168.zip[issue_168_if.pbtxt]",
-    "format":   "ONNX v3",
-    "link":     "https://github.com/lutzroeder/netron/issues/168"
-  },
-  {
-    "type":     "onnx",
-    "target":   "issue_168_loop.pbtxt",
-    "source":   "https://github.com/lutzroeder/netron/files/10349183/issue_168.zip[issue_168_loop.pbtxt]",
-    "format":   "ONNX v3",
-    "link":     "https://github.com/lutzroeder/netron/issues/168"
-  },
-  {
-    "type":     "onnx",
-    "target":   "issue_168_scan.pbtxt",
-    "source":   "https://github.com/lutzroeder/netron/files/10349183/issue_168.zip[issue_168_scan.pbtxt]",
-    "format":   "ONNX v3",
-    "link":     "https://github.com/lutzroeder/netron/issues/168"
-  },
-  {
-    "type":     "onnx",
-    "target":   "issue_589.onnx.zip",
-    "source":   "https://github.com/lutzroeder/netron/files/10349190/issue_589.onnx.zip",
-    "format":   "ONNX v6",
-    "action":   "skip-render",
-    "link":     "https://github.com/lutzroeder/netron/issues/589"
-  },
-  {
-    "type":     "onnx",
-    "target":   "issue_845.onnx",
-    "source":   "https://github.com/lutzroeder/netron/files/10349194/issue_845.onnx.zip[issue_845.onnx]",
-    "format":   "ONNX v4",
-    "link":     "https://github.com/lutzroeder/netron/issues/6"
-  },
   {
     "type":     "onnx",
     "target":   "optional_1.onnx",