diff --git a/.changesets/maint_extended_errors_telemetry.md b/.changesets/maint_extended_errors_telemetry.md
new file mode 100644
index 0000000000..47554a0801
--- /dev/null
+++ b/.changesets/maint_extended_errors_telemetry.md
@@ -0,0 +1,3 @@
+### Measure `preview_extended_error_metrics` in Apollo config telemetry.  ([PR #7597](https://github.com/apollographql/router/pull/7597))
+
+By [@timbotnik](https://github.com/timbotnik) in https://github.com/apollographql/router/pull/7597
diff --git a/apollo-router/src/configuration/metrics.rs b/apollo-router/src/configuration/metrics.rs
index 47832a3df9..6df6afda0b 100644
--- a/apollo-router/src/configuration/metrics.rs
+++ b/apollo-router/src/configuration/metrics.rs
@@ -400,7 +400,9 @@ impl InstrumentData {
             opt.signature_normalization_algorithm,
             "$.signature_normalization_algorithm",
             opt.metrics_reference_mode,
-            "$.metrics_reference_mode"
+            "$.metrics_reference_mode",
+            opt.errors.preview_extended_error_metrics,
+            "$.errors.preview_extended_error_metrics"
         );
 
         populate_config_instrument!(