diff --git a/javascript/sentry-conventions/src/attributes.ts b/javascript/sentry-conventions/src/attributes.ts
index 9530ab38..4d7fbb04 100644
--- a/javascript/sentry-conventions/src/attributes.ts
+++ b/javascript/sentry-conventions/src/attributes.ts
@@ -10248,21 +10248,21 @@ export type SENTRY_DSC_ENVIRONMENT_TYPE = string;
 /**
  * The ID of the project where the trace originated (i.e. the project of the SDK that started the trace). Propagated through the dynamic sampling context and set by Relay during ingestion. `sentry.dsc.project_id`
  *
- * Attribute Value Type: `number` {@link SENTRY_DSC_PROJECT_ID_TYPE}
+ * Attribute Value Type: `string` {@link SENTRY_DSC_PROJECT_ID_TYPE}
  *
  * Contains PII: false
  *
  * Attribute defined in OTEL: No
  * Visibility: internal
  *
- * @example 12345
+ * @example "12345"
  */
 export const SENTRY_DSC_PROJECT_ID = 'sentry.dsc.project_id';
 
 /**
  * Type for {@link SENTRY_DSC_PROJECT_ID} sentry.dsc.project_id
  */
-export type SENTRY_DSC_PROJECT_ID_TYPE = number;
+export type SENTRY_DSC_PROJECT_ID_TYPE = string;
 
 // Path: model/attributes/sentry/sentry__dsc__public_key.json
 
@@ -13699,7 +13699,7 @@ export const ATTRIBUTE_TYPE: Record<string, AttributeType> = {
   [SENTRY_DIST]: 'string',
   [SENTRY_DOMAIN]: 'string',
   [SENTRY_DSC_ENVIRONMENT]: 'string',
-  [SENTRY_DSC_PROJECT_ID]: 'integer',
+  [SENTRY_DSC_PROJECT_ID]: 'string',
   [SENTRY_DSC_PUBLIC_KEY]: 'string',
   [SENTRY_DSC_RELEASE]: 'string',
   [SENTRY_DSC_SAMPLED]: 'boolean',
@@ -20785,13 +20785,13 @@ export const ATTRIBUTE_METADATA: Record<AttributeName, AttributeMetadata> = {
   [SENTRY_DSC_PROJECT_ID]: {
     brief:
       'The ID of the project where the trace originated (i.e. the project of the SDK that started the trace). Propagated through the dynamic sampling context and set by Relay during ingestion.',
-    type: 'integer',
+    type: 'string',
     pii: {
       isPii: 'false',
     },
     isInOtel: false,
     visibility: 'internal',
-    example: 12345,
+    example: '12345',
     changelog: [{ version: '0.7.0', prs: [358], description: 'Add sentry.dsc.project_id as an attribute' }],
   },
   [SENTRY_DSC_PUBLIC_KEY]: {
diff --git a/model/attributes/sentry/sentry__dsc__project_id.json b/model/attributes/sentry/sentry__dsc__project_id.json
index 9727dbb5..cc4d2fbf 100644
--- a/model/attributes/sentry/sentry__dsc__project_id.json
+++ b/model/attributes/sentry/sentry__dsc__project_id.json
@@ -1,12 +1,12 @@
 {
   "key": "sentry.dsc.project_id",
   "brief": "The ID of the project where the trace originated (i.e. the project of the SDK that started the trace). Propagated through the dynamic sampling context and set by Relay during ingestion.",
-  "type": "integer",
+  "type": "string",
   "pii": {
     "key": "false"
   },
   "is_in_otel": false,
-  "example": 12345,
+  "example": "12345",
   "visibility": "internal",
   "changelog": [
     {
diff --git a/python/src/sentry_conventions/attributes.py b/python/src/sentry_conventions/attributes.py
index 570c5375..95de1501 100644
--- a/python/src/sentry_conventions/attributes.py
+++ b/python/src/sentry_conventions/attributes.py
@@ -5987,11 +5987,11 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
     SENTRY_DSC_PROJECT_ID: Literal["sentry.dsc.project_id"] = "sentry.dsc.project_id"
     """The ID of the project where the trace originated (i.e. the project of the SDK that started the trace). Propagated through the dynamic sampling context and set by Relay during ingestion.
 
-    Type: int
+    Type: str
     Contains PII: false
     Defined in OTEL: No
     Visibility: internal
-    Example: 12345
+    Example: "12345"
     """
 
     # Path: model/attributes/sentry/sentry__dsc__public_key.json
@@ -14334,11 +14334,11 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
     ),
     "sentry.dsc.project_id": AttributeMetadata(
         brief="The ID of the project where the trace originated (i.e. the project of the SDK that started the trace). Propagated through the dynamic sampling context and set by Relay during ingestion.",
-        type=AttributeType.INTEGER,
+        type=AttributeType.STRING,
         pii=PiiInfo(isPii=IsPii.FALSE),
         is_in_otel=False,
         visibility=Visibility.INTERNAL,
-        example=12345,
+        example="12345",
         changelog=[
             ChangelogEntry(
                 version="0.7.0",
@@ -16525,7 +16525,7 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
         "sentry.dist": str,
         "sentry.domain": str,
         "sentry.dsc.environment": str,
-        "sentry.dsc.project_id": int,
+        "sentry.dsc.project_id": str,
         "sentry.dsc.public_key": str,
         "sentry.dsc.release": str,
         "sentry.dsc.sample_rate": str,