diff --git a/lib/galaxy/schema/jobs.py b/lib/galaxy/schema/jobs.py
index d3316f318124..f36f8b0a7675 100644
--- a/lib/galaxy/schema/jobs.py
+++ b/lib/galaxy/schema/jobs.py
@@ -271,7 +271,7 @@ class ShowJobResponse(EncodedJobDetails):
         title="Standard Error",
         description="Combined tool and job standard error streams.",
     )
-    job_messages: Optional[List[str]] = Field(
+    job_messages: Optional[List[Any]] = Field(
         default=None,
         title="Job Messages",
         description="List with additional information and possible reasons for a failed job.",