diff --git a/packages/prom-client/metrics.ts b/packages/prom-client/metrics.ts
index e8483eeb2..0076e00b0 100644
--- a/packages/prom-client/metrics.ts
+++ b/packages/prom-client/metrics.ts
@@ -51,6 +51,7 @@ createMetric(Gauge, 'hydro_task', 'taskcount', {
         const data = await taskColl.aggregate([
             { $group: { _id: '$type', count: { $sum: 1 } } },
         ]).toArray();
+        this.reset();
         for (const line of data) {
             this.set({ type: line._id as unknown as string }, line.count);
         }
diff --git a/packages/prom-client/package.json b/packages/prom-client/package.json
index 3e5c576da..75e7f1d6f 100644
--- a/packages/prom-client/package.json
+++ b/packages/prom-client/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hydrooj/prom-client",
-    "version": "0.0.3",
+    "version": "0.0.4",
     "dependencies": {
         "prom-client": "^14.0.1"
     }