diff --git a/bids-validator/tests/json.spec.js b/bids-validator/tests/json.spec.js
index 65d66b649..fa60abe69 100644
--- a/bids-validator/tests/json.spec.js
+++ b/bids-validator/tests/json.spec.js
@@ -496,4 +496,54 @@ describe('JSON', function() {
       assert(issues.length === 0)
     })
   })
+
+  it('dataset_description.json should validate with DatasetType "derivative" and GeneratedBy defined', function() {
+    var jsonObj = {
+      Name: 'Example Name',
+      BIDSVersion: '1.4.0',
+      Authors: ['example author'],
+      DatasetType: 'derivative',
+      GeneratedBy: [{ Name: 'Manual' }],
+    }
+    jsonDict[dataset_description_file.relativePath] = jsonObj
+    validate.JSON(dataset_description_file, jsonDict, function(issues) {
+      assert(issues.length === 0)
+    })
+  })
+
+  it('dataset_description.json should NOT validate with DatasetType "derivative" and GeneratedBy empty', function() {
+    var jsonObj = {
+      Name: 'Example Name',
+      BIDSVersion: '1.4.0',
+      Authors: ['example author'],
+      DatasetType: 'derivative',
+      GeneratedBy: [],
+    }
+    jsonDict[dataset_description_file.relativePath] = jsonObj
+    validate.JSON(dataset_description_file, jsonDict, function(issues) {
+      assert(issues.length === 1)
+      assert(
+        issues[0].code == 55 &&
+          issues[0].evidence ==
+            '.GeneratedBy should NOT have fewer than 1 items',
+      )
+    })
+  })
+
+  it('dataset_description.json should NOT validate with DatasetType "derivative" and GeneratedBy missing', function() {
+    var jsonObj = {
+      Name: 'Example Name',
+      BIDSVersion: '1.4.0',
+      Authors: ['example author'],
+      DatasetType: 'derivative',
+    }
+    jsonDict[dataset_description_file.relativePath] = jsonObj
+    validate.JSON(dataset_description_file, jsonDict, function(issues) {
+      assert(issues.length === 2)
+      assert(
+        issues[0].code == 55 &&
+          issues[0].evidence == " should have required property 'GeneratedBy'",
+      )
+    })
+  })
 })
diff --git a/bids-validator/validators/json/schemas/dataset_description.json b/bids-validator/validators/json/schemas/dataset_description.json
index a849f3137..4847d68f9 100644
--- a/bids-validator/validators/json/schemas/dataset_description.json
+++ b/bids-validator/validators/json/schemas/dataset_description.json
@@ -1,6 +1,7 @@
 {
   "$schema": "http://json-schema.org/draft-06/schema#",
   "$id": "http://example.com/example.json",
+  "type": "object",
   "properties": {
     "Name": {
       "type": "string"
@@ -51,6 +52,38 @@
     "DatasetDOI": {
       "type": "string"
     },
+    "GeneratedBy": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "properties": {
+          "Name": {"type": "string"},
+          "Version": {"type": "string"},
+          "Description": {"type": "string"},
+          "CodeURL": {"type": "string", "format": "uri"},
+          "Container": {
+            "type": "object",
+            "properties": {
+              "Type": {"type": "string"},
+              "Tag": {"type": "string"},
+              "URI": {"type": "string", "format": "uri"}
+            }
+          }
+        }
+      }
+    },
+    "SourceDatasets": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "URL": {"type": "string", "format": "uri"},
+          "DOI": {"type": "string"},
+          "Version": {"type": "string"}
+        }
+      }
+    },
     "Genetics": {
       "type": "object",
       "properties": {
@@ -70,5 +103,19 @@
     }
   },
   "required": ["Name", "BIDSVersion"],
-  "type": "object"
+  "allOf": [
+    { "$ref": "#/dependency-definitions/if-DatasetType-is-derivative-then-GeneratedBy-is-required" }
+  ],
+  "dependency-definitions": {
+    "if-DatasetType-is-derivative-then-GeneratedBy-is-required": {
+      "if": {
+	"type": "object",
+	"properties": {"DatasetType": {"const": "derivative"}},
+	"required": ["DatasetType"]
+      },
+      "then": {
+	"required": ["GeneratedBy"]
+      }
+    }
+  }
 }