diff --git a/api/prometheus/v1/api_test.go b/api/prometheus/v1/api_test.go
index 29a2910..5e66076 100644
--- a/api/prometheus/v1/api_test.go
+++ b/api/prometheus/v1/api_test.go
@@ -447,7 +447,7 @@ func TestAPIs(t *testing.T) {
 						},
 						"scrapeUrl":  testURL.String(),
 						"lastError":  "error while scraping target",
-						"lastScrape": testTime.Format(time.RFC3339Nano),
+						"lastScrape": testTime.UTC().Format(time.RFC3339Nano),
 						"health":     "up",
 					},
 				},
@@ -477,7 +477,7 @@ func TestAPIs(t *testing.T) {
 						},
 						ScrapeURL:  testURL,
 						LastError:  "error while scraping target",
-						LastScrape: testTime.Round(0),
+						LastScrape: testTime.UTC(),
 						Health:     scrape.HealthGood,
 					},
 				},