diff --git a/src/JsonSchema/Uri/UriRetriever.php b/src/JsonSchema/Uri/UriRetriever.php
index 4d52937a..3e9a71c1 100644
--- a/src/JsonSchema/Uri/UriRetriever.php
+++ b/src/JsonSchema/Uri/UriRetriever.php
@@ -11,6 +11,7 @@
 
 namespace JsonSchema\Uri;
 
+use JsonSchema\DraftIdentifiers;
 use JsonSchema\Exception\InvalidSchemaMediaTypeException;
 use JsonSchema\Exception\JsonDecodingException;
 use JsonSchema\Exception\ResourceNotFoundException;
@@ -182,11 +183,17 @@ public function retrieve($uri, $baseUri = null, $translate = true)
 
         $jsonSchema = $this->loadSchema($fetchUri);
 
+        // Detect dialect from the root schema's $schema keyword before
+        // resolvePointer() may walk into a sub-schema.
+        $dialect = isset($jsonSchema->{'$schema'}) ? rtrim($jsonSchema->{'$schema'}, '#') : null;
+        $usesDollarId = !in_array($dialect, [DraftIdentifiers::DRAFT_3()->withoutFragment(), DraftIdentifiers::DRAFT_4()->withoutFragment()], true);
+
         // Use the JSON pointer if specified
         $jsonSchema = $this->resolvePointer($jsonSchema, $resolvedUri);
 
         if ($jsonSchema instanceof \stdClass) {
-            $jsonSchema->id = $resolvedUri;
+            $idKeyword = $usesDollarId ? '$id' : 'id';
+            $jsonSchema->{$idKeyword} = $resolvedUri;
         }
 
         return $jsonSchema;
diff --git a/tests/Uri/UriRetrieverTest.php b/tests/Uri/UriRetrieverTest.php
index e14f2205..cf37d77d 100644
--- a/tests/Uri/UriRetrieverTest.php
+++ b/tests/Uri/UriRetrieverTest.php
@@ -339,7 +339,59 @@ public function testRetrieveSchemaFromPackage(): void
         $this->assertNotFalse($schema);
 
         // check that the schema was loaded & processed correctly
-        $this->assertEquals('454f423bd7edddf0bc77af4130ed9161', md5(json_encode($schema)));
+        $this->assertEquals('object', $schema->type);
+        $this->assertObjectHasAttribute('$id', $schema);
+        $this->assertEquals('package://tests/fixtures/foobar.json', $schema->{'$id'});
+    }
+
+    public function testRetrieveDraft04SchemaWithFragmentUsesId(): void
+    {
+        $retriever = new UriRetriever();
+        $schema = $retriever->retrieve('package://tests/fixtures/draft04-schema-with-fragment.json');
+
+        $this->assertObjectHasAttribute('id', $schema);
+        $this->assertObjectNotHasAttribute('$id', $schema);
+        $this->assertEquals('package://tests/fixtures/draft04-schema-with-fragment.json', $schema->id);
+    }
+
+    public function testRetrieveDraft04SchemaWithoutFragmentUsesId(): void
+    {
+        $retriever = new UriRetriever();
+        $schema = $retriever->retrieve('package://tests/fixtures/draft04-schema-without-fragment.json');
+
+        $this->assertObjectHasAttribute('id', $schema);
+        $this->assertObjectNotHasAttribute('$id', $schema);
+        $this->assertEquals('package://tests/fixtures/draft04-schema-without-fragment.json', $schema->id);
+    }
+
+    public function testRetrieveDraft07SchemaWithFragmentUsesDollarId(): void
+    {
+        $retriever = new UriRetriever();
+        $schema = $retriever->retrieve('package://tests/fixtures/draft07-schema.json');
+
+        $this->assertObjectHasAttribute('$id', $schema);
+        $this->assertObjectNotHasAttribute('id', $schema);
+        $this->assertEquals('package://tests/fixtures/draft07-schema.json', $schema->{'$id'});
+    }
+
+    public function testRetrieveDraft07SchemaWithoutFragmentUsesDollarId(): void
+    {
+        $retriever = new UriRetriever();
+        $schema = $retriever->retrieve('package://tests/fixtures/draft07-schema-without-fragment.json');
+
+        $this->assertObjectHasAttribute('$id', $schema);
+        $this->assertObjectNotHasAttribute('id', $schema);
+        $this->assertEquals('package://tests/fixtures/draft07-schema-without-fragment.json', $schema->{'$id'});
+    }
+
+    public function testRetrieveSchemaWithoutDialectDefaultsToDollarId(): void
+    {
+        $retriever = new UriRetriever();
+        $schema = $retriever->retrieve('package://tests/fixtures/foobar.json');
+
+        $this->assertObjectHasAttribute('$id', $schema);
+        $this->assertObjectNotHasAttribute('id', $schema);
+        $this->assertEquals('package://tests/fixtures/foobar.json', $schema->{'$id'});
     }
 
     public function testInvalidContentTypeEndpointsDefault(): void
diff --git a/tests/fixtures/draft04-schema-with-fragment.json b/tests/fixtures/draft04-schema-with-fragment.json
new file mode 100644
index 00000000..a80ee898
--- /dev/null
+++ b/tests/fixtures/draft04-schema-with-fragment.json
@@ -0,0 +1,9 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "type": "object",
+    "properties": {
+        "foo": {
+            "type": "string"
+        }
+    }
+}
diff --git a/tests/fixtures/draft04-schema-without-fragment.json b/tests/fixtures/draft04-schema-without-fragment.json
new file mode 100644
index 00000000..e67b850f
--- /dev/null
+++ b/tests/fixtures/draft04-schema-without-fragment.json
@@ -0,0 +1,9 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema",
+    "type": "object",
+    "properties": {
+        "foo": {
+            "type": "string"
+        }
+    }
+}
diff --git a/tests/fixtures/draft07-schema-without-fragment.json b/tests/fixtures/draft07-schema-without-fragment.json
new file mode 100644
index 00000000..52bf4972
--- /dev/null
+++ b/tests/fixtures/draft07-schema-without-fragment.json
@@ -0,0 +1,9 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema",
+    "type": "object",
+    "properties": {
+        "foo": {
+            "type": "string"
+        }
+    }
+}
diff --git a/tests/fixtures/draft07-schema.json b/tests/fixtures/draft07-schema.json
new file mode 100644
index 00000000..39f88b39
--- /dev/null
+++ b/tests/fixtures/draft07-schema.json
@@ -0,0 +1,9 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "type": "object",
+    "properties": {
+        "foo": {
+            "type": "string"
+        }
+    }
+}