diff --git a/Package.resolved b/Package.resolved
index b3a9510..0e319bc 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -42,8 +42,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-collections",
       "state" : {
-        "revision" : "671108c96644956dddcd89dd59c203dcdb36cec7",
-        "version" : "1.1.4"
+        "revision" : "c1805596154bb3a265fd91b8ac0c4433b4348fb0",
+        "version" : "1.2.0"
       }
     },
     {