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 ## Apollo Client 3.2.0 (not yet released)
 
+## Bug Fixes
+
+- Check structural equality of diff results in `QueryInfo#setDiff` instead of reference equality. <br/>
+  [@benjamn](https://github.com/benjamn) in [#6891](https://github.com/apollographql/apollo-client/pull/6891)
+
 ## Improvements
 
 - Substantially improve type inference for data and variables types using `TypedDocumentNode<Data, Variables>` type instead of `DocumentNode`. <br/>