diff --git a/README.md b/README.md
index 0f3c2c4..2a54550 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ This project is a continuation of the development of the original pgSCV by [Alex
 Download the archive from [releases](https://github.com/cherts/pgscv/releases). Unpack the archive. Create minimum config file. Start pgSCV systemd service under `postgres` user.
 
 ```bash
-curl -s -L https://github.com/cherts/pgscv/releases/download/v0.8.4/pgscv_0.8.4_linux_amd64.tar.gz -o - | tar xzf - -C /tmp && \
+curl -s -L https://github.com/cherts/pgscv/releases/download/v0.8.5/pgscv_0.8.5_linux_amd64.tar.gz -o - | tar xzf - -C /tmp && \
 mv /tmp/pgscv.yaml /etc && \
 mv /tmp/pgscv.service /etc/systemd/system &&  \
 mv /tmp/pgscv.default /etc/default/pgscv && \
diff --git a/README.ru.md b/README.ru.md
index cafc86b..4931eb7 100644
--- a/README.ru.md
+++ b/README.ru.md
@@ -29,7 +29,7 @@
 Загрузите архив со страницы [releases](https://github.com/cherts/pgscv/releases). Распакуйте архив. Создайте минимальный файл конфигураации. Запустите pgSCV под пользователем postgres.
 
 ```bash
-curl -s -L https://github.com/cherts/pgscv/releases/download/v0.8.4/pgscv_0.8.4_linux_amd64.tar.gz -o - | tar xzf - -C /tmp && \
+curl -s -L https://github.com/cherts/pgscv/releases/download/v0.8.5/pgscv_0.8.5_linux_amd64.tar.gz -o - | tar xzf - -C /tmp && \
 mv /tmp/pgscv.yaml /etc && \
 mv /tmp/pgscv.service /etc/systemd/system &&  \
 mv /tmp/pgscv.default /etc/default/pgscv && \
diff --git a/internal/collector/patroni_common.go b/internal/collector/patroni_common.go
index 10c9435..bc9cd7d 100644
--- a/internal/collector/patroni_common.go
+++ b/internal/collector/patroni_common.go
@@ -463,9 +463,13 @@ func parsePatroniResponse(resp *apiPatroniResponse) (*patroniInfo, error) {
 		running = 1
 	}
 
-	t1, err := time.Parse("2006-01-02 15:04:05.999999Z07:00", resp.PmStartTime)
-	if err != nil {
-		return nil, fmt.Errorf("parse patroni postmaster_start_time string '%s' failed: %s", resp.PmStartTime, err)
+	var PmStartTimeSec float64
+	if resp.PmStartTime != "null" && resp.PmStartTime != "" {
+		t1, err := time.Parse("2006-01-02 15:04:05.999999Z07:00", resp.PmStartTime)
+		if err != nil {
+			return nil, fmt.Errorf("parse patroni postmaster_start_time string '%s' failed: %s", resp.PmStartTime, err)
+		}
+		PmStartTimeSec = float64(t1.UnixNano()) / 1000000000
 	}
 
 	var master, stdleader, replica float64
@@ -523,7 +527,7 @@ func parsePatroniResponse(resp *apiPatroniResponse) (*patroniInfo, error) {
 		version:           float64(version),
 		versionStr:        resp.Patroni.Version,
 		running:           running,
-		startTime:         float64(t1.UnixNano()) / 1000000000,
+		startTime:         PmStartTimeSec,
 		master:            master,
 		standbyLeader:     stdleader,
 		replica:           replica,
diff --git a/internal/service/service.go b/internal/service/service.go
index 5846e8c..54c005b 100644
--- a/internal/service/service.go
+++ b/internal/service/service.go
@@ -239,7 +239,7 @@ func attemptRequest(baseurl string) error {
 		return err
 	}
 
-	if resp.StatusCode != http.StatusOK {
+	if (resp.StatusCode != http.StatusOK) && (resp.StatusCode != 503) {
 		return fmt.Errorf("bad response: %s", resp.Status)
 	}