diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5abd6d2d37..6f6108c0e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - Emit outcomes for spans trimmed from a transaction. ([#5410](https://github.com/getsentry/relay/pull/5410))
 - Support `sample` alias in CSP reports. ([#5554](https://github.com/getsentry/relay/pull/5554))
 - Fix inconsistencies with Insights' expected attributes. ([#5561](https://github.com/getsentry/relay/pull/5561))
+- Validate that EAP integer attributes fit into `i64`. ([#5621](https://github.com/getsentry/relay/pull/5621))
 
 **Features**:
 
diff --git a/relay-event-normalization/src/eap/mod.rs b/relay-event-normalization/src/eap/mod.rs
index 84e2ec7ef5..085c8728ae 100644
--- a/relay-event-normalization/src/eap/mod.rs
+++ b/relay-event-normalization/src/eap/mod.rs
@@ -123,7 +123,8 @@ pub fn normalize_attribute_types(attributes: &mut Annotated<Attributes>) {
         match (&mut inner.value.ty, &mut inner.value.value) {
             (Annotated(Some(Boolean), _), Annotated(Some(Value::Bool(_)), _)) => (),
             (Annotated(Some(Integer), _), Annotated(Some(Value::I64(_)), _)) => (),
-            (Annotated(Some(Integer), _), Annotated(Some(Value::U64(_)), _)) => (),
+            (Annotated(Some(Integer), _), Annotated(Some(Value::U64(u)), _))
+                if i64::try_from(*u).is_ok() => {}
             (Annotated(Some(Double), _), Annotated(Some(Value::I64(_)), _)) => (),
             (Annotated(Some(Double), _), Annotated(Some(Value::U64(_)), _)) => (),
             (Annotated(Some(Double), _), Annotated(Some(Value::F64(_)), _)) => (),
@@ -766,6 +767,10 @@ mod tests {
                 "type": "integer",
                 "value": "abc"
             },
+            "invalid_int": {
+                "type": "integer",
+                "value": 9223372036854775808
+            },
             "missing_type": {
                 "value": "value with missing type"
             },
@@ -807,6 +812,7 @@ mod tests {
             "type": "double",
             "value": -42
           },
+          "invalid_int": null,
           "invalid_int_from_invalid_string": null,
           "missing_type": null,
           "missing_value": null,
@@ -867,6 +873,17 @@ mod tests {
             "some_other_field": "some_other_value"
           },
           "_meta": {
+            "invalid_int": {
+              "": {
+                "err": [
+                  "invalid_data"
+                ],
+                "val": {
+                  "type": "integer",
+                  "value": 9223372036854775808
+                }
+              }
+            },
             "invalid_int_from_invalid_string": {
               "": {
                 "err": [
diff --git a/tests/integration/test_spansv2.py b/tests/integration/test_spansv2.py
index b58ef9aaaf..b43de57c87 100644
--- a/tests/integration/test_spansv2.py
+++ b/tests/integration/test_spansv2.py
@@ -73,6 +73,8 @@ def test_spansv2_basic(
             "attributes": {
                 "foo": {"value": "bar", "type": "string"},
                 "array": {"value": ["foo", "bar"], "type": "array"},
+                "valid_int": {"value": 9223372036854775807, "type": "integer"},
+                "invalid_int": {"value": 9223372036854775808, "type": "integer"},
                 "invalid": {"value": True, "type": "string"},
                 "http.response_content_length": {"value": 17, "type": "integer"},
             },
@@ -96,6 +98,8 @@ def test_spansv2_basic(
             "foo": {"type": "string", "value": "bar"},
             "http.response_content_length": {"value": 17, "type": "integer"},
             "http.response.body.size": {"value": 17, "type": "integer"},
+            "valid_int": {"value": 9223372036854775807, "type": "integer"},
+            "invalid_int": None,
             "invalid": None,
             "sentry.browser.name": {"type": "string", "value": "Python Requests"},
             "sentry.browser.version": {"type": "string", "value": "2.32"},
@@ -118,12 +122,18 @@ def test_spansv2_basic(
         },
         "_meta": {
             "attributes": {
+                "invalid_int": {
+                    "": {
+                        "err": ["invalid_data"],
+                        "val": {"type": "integer", "value": 9223372036854775808},
+                    }
+                },
                 "invalid": {
                     "": {
                         "err": ["invalid_data"],
                         "val": {"type": "string", "value": True},
                     }
-                }
+                },
             }
         },
         "name": "some op",