diff --git a/agent/prompt_builder.py b/agent/prompt_builder.py
index 3a6ec2441..95b9b4bb9 100644
--- a/agent/prompt_builder.py
+++ b/agent/prompt_builder.py
@@ -583,7 +583,7 @@ def _parse_skill_file(skill_file: Path) -> tuple[bool, dict, str]:
 
         return True, frontmatter, extract_skill_description(frontmatter)
     except Exception as e:
-        logger.warning("Failed to parse skill file %s: %s", skill_file, e)
+        logger.warning("Failed to parse skill file %s: %s", skill_file, e, exc_info=True)
         return True, {}, ""
 
 
diff --git a/agent/trajectory.py b/agent/trajectory.py
index 90696eb8a..1d2e94315 100644
--- a/agent/trajectory.py
+++ b/agent/trajectory.py
@@ -53,4 +53,4 @@ def save_trajectory(trajectory: List[Dict[str, Any]], model: str,
             f.write(json.dumps(entry, ensure_ascii=False) + "\n")
         logger.info("Trajectory saved to %s", filename)
     except Exception as e:
-        logger.warning("Failed to save trajectory: %s", e)
+        logger.warning("Failed to save trajectory: %s", e, exc_info=True)