diff --git a/CHANGELOG.md b/CHANGELOG.md
index 496a2f1cd8..178a4e3596 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@
 
 ## Unreleased
 
+### Changes
+
+- Remove the undocumented `maxTransactionDurationExceeded` span attribute; use the `deadline_exceeded` span status to filter timed-out transactions instead ([#6820](https://github.com/getsentry/sentry-react-native/pull/6820))
+
 ### Fixes
 
 - Fix stale `turbo_module.*` tags on Android native crashes ([#6823](https://github.com/getsentry/sentry-react-native/pull/6823))
diff --git a/packages/core/src/js/tracing/onSpanEndUtils.ts b/packages/core/src/js/tracing/onSpanEndUtils.ts
index aa61b08735..5f7e583946 100644
--- a/packages/core/src/js/tracing/onSpanEndUtils.ts
+++ b/packages/core/src/js/tracing/onSpanEndUtils.ts
@@ -92,8 +92,6 @@ export const adjustTransactionDuration = (client: Client, span: Span, maxDuratio
 
     if (isOutdatedTransaction) {
       span.setStatus({ code: SPAN_STATUS_ERROR, message: 'deadline_exceeded' });
-      // TODO: check where was used, might be possible to delete
-      span.setAttribute('maxTransactionDurationExceeded', 'true');
     }
   });
 };
diff --git a/packages/core/test/tracing/adjustTransactionDuration.test.ts b/packages/core/test/tracing/adjustTransactionDuration.test.ts
index 88ecf9836d..9dab75e9b3 100644
--- a/packages/core/test/tracing/adjustTransactionDuration.test.ts
+++ b/packages/core/test/tracing/adjustTransactionDuration.test.ts
@@ -38,7 +38,6 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp + 120);
 
     expect(spanToJSON(span).status).toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 
   it('does not mark span as deadline_exceeded when duration is within maxDurationMs', () => {
@@ -53,7 +52,6 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp + 30);
 
     expect(spanToJSON(span).status).not.toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).not.toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 
   it('does not mark span as deadline_exceeded when duration equals maxDurationMs exactly', () => {
@@ -68,7 +66,6 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp + 60);
 
     expect(spanToJSON(span).status).not.toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).not.toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 
   it('marks span as deadline_exceeded when duration is negative', () => {
@@ -83,7 +80,6 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp - 10);
 
     expect(spanToJSON(span).status).toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 
   it('correctly handles maxDurationMs in milliseconds not seconds', () => {
@@ -99,7 +95,6 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp + 601);
 
     expect(spanToJSON(span).status).toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 
   it('does not mark span when duration is 599 seconds with 600_000ms max', () => {
@@ -115,7 +110,6 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp + 599);
 
     expect(spanToJSON(span).status).not.toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).not.toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 
   it('does not affect spans from other transactions', () => {
@@ -153,6 +147,5 @@ describe('adjustTransactionDuration', () => {
     span.end(startTimestamp + 1);
 
     expect(spanToJSON(span).status).toBe('deadline_exceeded');
-    expect(spanToJSON(span).data).toMatchObject({ maxTransactionDurationExceeded: 'true' });
   });
 });