diff --git a/.changeset/loud-trainers-dress.md b/.changeset/loud-trainers-dress.md
new file mode 100644
index 00000000..b918b3dd
--- /dev/null
+++ b/.changeset/loud-trainers-dress.md
@@ -0,0 +1,5 @@
+---
+"@replayio/test-utils": patch
+---
+
+Gather data about deprecated `filter` config usage (as preparation to remove it)
diff --git a/packages/test-utils/src/reporter.ts b/packages/test-utils/src/reporter.ts
index 36d44220..edd06831 100644
--- a/packages/test-utils/src/reporter.ts
+++ b/packages/test-utils/src/reporter.ts
@@ -257,6 +257,17 @@ export default class ReplayReporter<
           })
         );
     }
+
+    // Logging this here instead of in _parseConfig is intentional; the logger has been associated with the user's API key
+    if (config) {
+      if (config.filter) {
+        logger.info("ReplayReporter:Config:HasFilter", {
+          filter: config.filter.toString(),
+        });
+      } else {
+        logger.info("ReplayReporter:Config:NoFilter");
+      }
+    }
   }
 
   setTestRunnerVersion(version: TestRunner["version"]) {