diff --git a/changelog.md b/changelog.md
index 7719d2f..cfffa4d 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 2026-03-02 - 3.0.2 - fix(pidusage)
+prune history entries for PIDs not present in the requested set to avoid stale data and memory growth
+
+- Deletes entries from the history map when a PID is not included in the current pids array
+- Prevents accumulation of stale PID histories and potential memory growth
+- Change implemented in ts/smartmetrics.pidusage.ts alongside the metrics result construction
+
 ## 2026-02-19 - 3.0.1 - fix(smartmetrics)
 no code changes detected; no version bump or release required
 
diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 9dca734..c627098 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartmetrics',
-  version: '3.0.1',
+  version: '3.0.2',
   description: 'A package for easy collection and reporting of system and process metrics.'
 }
diff --git a/ts/smartmetrics.pidusage.ts b/ts/smartmetrics.pidusage.ts
index a975a87..eba289a 100644
--- a/ts/smartmetrics.pidusage.ts
+++ b/ts/smartmetrics.pidusage.ts
@@ -125,5 +125,12 @@ export async function getPidUsage(
     });
   }
 
+  // Prune history entries for PIDs no longer in the requested set
+  for (const histPid of history.keys()) {
+    if (!pids.includes(histPid)) {
+      history.delete(histPid);
+    }
+  }
+
   return result;
 }