diff --git a/Package.resolved b/Package.resolved
index dd55e63ab..2af18f396 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -10,6 +10,15 @@
           "version": "0.4.1"
         }
       },
+      {
+        "package": "swift-collections-benchmark",
+        "repositoryURL": "https://github.com/apple/swift-collections-benchmark",
+        "state": {
+          "branch": null,
+          "revision": "49297647d1c0855eb33ec18cd6ee1181727c159b",
+          "version": "0.0.1"
+        }
+      },
       {
         "package": "swift-system",
         "repositoryURL": "https://github.com/apple/swift-system",