diff --git a/MIGRATION_GUIDE.md b/MIGRATION_GUIDE.md
index a2322d504d..3e3a36a211 100644
--- a/MIGRATION_GUIDE.md
+++ b/MIGRATION_GUIDE.md
@@ -28,6 +28,7 @@ Looking to upgrade from Sentry SDK 2.x to 3.x? Here's a comprehensive list of wh
 - We changed the way we emit warnings. Deprecations will from now on be always emitted using `warnings.warn()`, while all other warnings will be emitted using `logger.warning()`.
 - `sentry_sdk.init()` can no longer be used as a context manager.
 - The `@trace` decorator doesn't accept a `template` parameter anymore.
+- The option `attach_stacktrace` is now `True` by default, meaning the SDK will attach stack traces to messages.
 
 ### Logging
 
diff --git a/sentry_sdk/consts.py b/sentry_sdk/consts.py
index b55460aee7..7cd35a08a0 100644
--- a/sentry_sdk/consts.py
+++ b/sentry_sdk/consts.py
@@ -1300,7 +1300,7 @@ def __init__(
         before_send: "Optional[EventProcessor]" = None,
         before_breadcrumb: "Optional[BreadcrumbProcessor]" = None,
         debug: "Optional[bool]" = None,
-        attach_stacktrace: bool = False,
+        attach_stacktrace: bool = True,
         ca_certs: "Optional[str]" = None,
         traces_sample_rate: "Optional[float]" = None,
         traces_sampler: "Optional[TracesSampler]" = None,
diff --git a/tests/integrations/logging/test_logging.py b/tests/integrations/logging/test_logging.py
index ed069efbbb..e86b529948 100644
--- a/tests/integrations/logging/test_logging.py
+++ b/tests/integrations/logging/test_logging.py
@@ -37,10 +37,6 @@ def test_logging_defaults(sentry_init, capture_events):
 
     sentry_sdk.flush()
 
-    for event in events:
-        print(event)
-        print()
-
     # Without adding the integration explicitly, only the message should be
     # captured (no logs), and it shouldn't have any breadcrumbs
     assert len(events) == 1
@@ -160,6 +156,7 @@ def test_event_logging_stack_trace(
         integrations=[
             LoggingIntegration(breadcrumb_level=logging.INFO, event_level=logging.ERROR)
         ],
+        attach_stacktrace=False,
     )
     events = capture_events()
 
diff --git a/tests/test_client.py b/tests/test_client.py
index 624fc7f713..09f6a5e2d5 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -504,6 +504,25 @@ def bar():
         assert functions == ["foo", "bar"]
 
 
+def test_attach_stacktrace_default(sentry_init, capture_events):
+    sentry_init()
+    events = capture_events()
+
+    def foo():
+        bar()
+
+    def bar():
+        capture_message("HI")
+
+    foo()
+
+    (event,) = events
+    (thread,) = event["threads"]["values"]
+    functions = [x["function"] for x in thread["stacktrace"]["frames"]]
+
+    assert functions[-2:] == ["foo", "bar"]
+
+
 def test_attach_stacktrace_enabled(sentry_init, capture_events):
     sentry_init(attach_stacktrace=True)
     events = capture_events()