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+### Fix metrics attribute types ([Issue #3687](https://github.com/apollographql/router/issues/3687))
+
+Metrics attributes were being coerced to strings. This is now fixed.
+In addition, the logic around types accepted as metrics attributes has been simplified. It will log and ignore values of the wrong type.
+
+By [@BrynCooke](https://github.com/BrynCooke) in https://github.com/apollographql/router/pull/3701