diff --git a/src/__tests__/definitions/valid-parallel-parameters.json b/src/__tests__/definitions/valid-parallel-parameters.json
new file mode 100644
index 0000000..ace90ff
--- /dev/null
+++ b/src/__tests__/definitions/valid-parallel-parameters.json
@@ -0,0 +1,23 @@
+{
+  "StartAt": "Parallel State",
+  "States": {
+    "Parallel State": {
+      "Type": "Parallel",
+      "Branches": [
+        {
+          "StartAt": "Pass",
+          "States": {
+            "Pass": {
+              "Type": "Pass",
+              "End": true
+            }
+          }
+        }
+      ],
+      "Parameters": {
+        "stateName.$": "$$.State.Name"
+      },
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/schemas/parallel.json b/src/schemas/parallel.json
index d772909..b0bfcca 100644
--- a/src/schemas/parallel.json
+++ b/src/schemas/parallel.json
@@ -7,6 +7,9 @@
       "type": "string",
       "pattern": "^Parallel$"
     },
+    "Parameters": {
+      "type": "object"
+    },
     "Next": {
       "type": "string"
     },