diff --git a/cmd/terramate/cli/cloud_credential_google.go b/cmd/terramate/cli/cloud_credential_google.go
index 2a79dc3348..410c813a55 100644
--- a/cmd/terramate/cli/cloud_credential_google.go
+++ b/cmd/terramate/cli/cloud_credential_google.go
@@ -148,13 +148,13 @@ func startServer(
 		}
 	}()
 
-	rand.Seed(time.Now().UnixNano())
+	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
 
 	var ln net.Listener
 	const maxretry = 5
 	var retry int
 	for retry = 0; retry < maxretry; retry++ {
-		addr := "127.0.0.1:" + strconv.Itoa(minPort+rand.Intn(maxPort-minPort))
+		addr := "127.0.0.1:" + strconv.Itoa(minPort+rng.Intn(maxPort-minPort))
 		s.Addr = addr
 
 		ln, err = net.Listen("tcp", addr)
diff --git a/go.mod b/go.mod
index dc95cfa99f..1b334d5276 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/terramate-io/terramate
 
-go 1.18
+go 1.20
 
 require (
 	github.com/alecthomas/kong v0.7.1