diff --git a/internal/sarin/client.go b/internal/sarin/client.go
index a71c06e..beaf5af 100644
--- a/internal/sarin/client.go
+++ b/internal/sarin/client.go
@@ -60,6 +60,7 @@ func NewHostClients(
 				WriteTimeout:                  timeout,
 				ReadTimeout:                   timeout,
 				MaxResponseBodySize:           safeUint64ToInt(maxResponseBody),
+				MaxIdemponentCallAttempts:     1,
 				DisableHeaderNamesNormalizing: true,
 				DisablePathNormalizing:        true,
 				NoDefaultUserAgentHeader:      true,
@@ -83,6 +84,7 @@ func NewHostClients(
 		WriteTimeout:                  timeout,
 		ReadTimeout:                   timeout,
 		MaxResponseBodySize:           safeUint64ToInt(maxResponseBody),
+		MaxIdemponentCallAttempts:     1,
 		DisableHeaderNamesNormalizing: true,
 		DisablePathNormalizing:        true,
 		NoDefaultUserAgentHeader:      true,
diff --git a/internal/sarin/scripthttp.go b/internal/sarin/scripthttp.go
index 633ddf8..285b485 100644
--- a/internal/sarin/scripthttp.go
+++ b/internal/sarin/scripthttp.go
@@ -59,6 +59,8 @@ func newScriptHTTPClient(
 			DialTimeout:         dialWithDeadline(dial),
 			MaxConnsPerHost:     safeUintToInt(maxConns),
 			MaxResponseBodySize: safeUint64ToInt(maxResponseBody),
+			// Retries would send one script call several times and hide it from the results.
+			MaxIdemponentCallAttempts: 1,
 			TLSConfig: &tls.Config{
 				InsecureSkipVerify: insecure, //nolint:gosec
 			},