diff --git a/src/parse.js b/src/parse.js
index 469477da9..9c3cc2753 100644
--- a/src/parse.js
+++ b/src/parse.js
@@ -523,6 +523,10 @@ function parse(source, root, options) {
                     parseEnum(type, token);
                     break;
 
+                case "reserved":
+                    readRanges(type.reserved || (type.reserved = []), true);
+                    break;
+
                 /* istanbul ignore next */
                 default:
                     throw illegal(token); // there are no groups with proto3 semantics
diff --git a/tests/data/uncommon.proto b/tests/data/uncommon.proto
index 114cab6d5..57605708d 100644
--- a/tests/data/uncommon.proto
+++ b/tests/data/uncommon.proto
@@ -93,3 +93,11 @@ service Test6 { option (custom).bar = "";
     rpc DoSomethingElse(   stream DoSomethingRequest  ) returns (DoSomethingResponse); /// post
     rpc DoSomethingEntirelyDifferent(DoSomethingRequest  ) returns (   stream DoSomethingResponse ); /// post
 };
+
+message Test7 {
+  repeated group RepeatedGroup = 1 {
+    optional string id = 2;
+    reserved 3;
+    optional string info = 4;
+  }
+}