diff --git a/zerver/webhooks/crashlytics/view.py b/zerver/webhooks/crashlytics/view.py
index 5fa5c5c762..61ba18e0bb 100644
--- a/zerver/webhooks/crashlytics/view.py
+++ b/zerver/webhooks/crashlytics/view.py
@@ -1,11 +1,10 @@
 # Webhooks for external integrations.
-from typing import Any, Dict
-
 from django.http import HttpRequest, HttpResponse
 
 from zerver.decorator import webhook_view
 from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
+from zerver.lib.validator import WildValue, check_int, check_string, to_wild_value
 from zerver.lib.webhooks.common import check_send_webhook_message
 from zerver.models import UserProfile
 
@@ -23,7 +22,7 @@ VERIFICATION_EVENT = "verification"
 def api_crashlytics_webhook(
     request: HttpRequest,
     user_profile: UserProfile,
-    payload: Dict[str, Any] = REQ(argument_type="body"),
+    payload: WildValue = REQ(argument_type="body", converter=to_wild_value),
 ) -> HttpResponse:
     event = payload["event"]
     if event == VERIFICATION_EVENT:
@@ -32,12 +31,12 @@ def api_crashlytics_webhook(
     else:
         issue_body = payload["payload"]
         subject = CRASHLYTICS_TOPIC_TEMPLATE.format(
-            display_id=issue_body["display_id"],
-            title=issue_body["title"],
+            display_id=issue_body["display_id"].tame(check_int),
+            title=issue_body["title"].tame(check_string),
         )
         body = CRASHLYTICS_MESSAGE_TEMPLATE.format(
-            impacted_devices_count=issue_body["impacted_devices_count"],
-            url=issue_body["url"],
+            impacted_devices_count=issue_body["impacted_devices_count"].tame(check_int),
+            url=issue_body["url"].tame(check_string),
         )
 
     check_send_webhook_message(request, user_profile, subject, body)