diff --git a/managed/services/agents/mongodb.go b/managed/services/agents/mongodb.go
index 37cac807af..3ff1983593 100644
--- a/managed/services/agents/mongodb.go
+++ b/managed/services/agents/mongodb.go
@@ -38,8 +38,8 @@ type collectorArgs struct {
 var (
 	// New MongoDB Exporter will be released with PMM agent v2.10.0.
 	newMongoExporterPMMVersion = version.MustParse("2.9.99")
-	v2_24_99                   = version.MustParse("2.24.99")
-	v2_25_99                   = version.MustParse("2.25.99")
+	v2_25_0                    = version.MustParse("2.25.0-0")
+	v2_26_0                    = version.MustParse("2.26.0-0")
 	v2_41_1                    = version.MustParse("2.41.1-0")
 )
 
@@ -55,33 +55,12 @@ func mongodbExporterConfig(node *models.Node, service *models.Service, exporter
 	// Starting with PMM 2.25.0, we change the discovering-mode making it to discover all databases.
 	// Until now, discovering mode was not working properly and was enabled only if mongodb.collstats-colls=
 	// was specified in the command line.
+	// Starting with PMM 2.26.0, we disabled all collectors by default and added flags to enable them.
 	// Starting with PMM 2.41.1 we added shards collector.
-	switch {
-	case !pmmAgentVersion.Less(v2_41_1): // >= 2.41.1
-		args = v226Args(exporter, tdp, listenAddress)
-
-		if exporter.MongoDBOptions != nil && exporter.MongoDBOptions.EnableAllCollectors {
-			args = append(args, "--collector.shards")
-		}
-	case !pmmAgentVersion.Less(v2_25_99): // >= 2.26
-		args = v226Args(exporter, tdp, listenAddress)
-	case !pmmAgentVersion.Less(v2_24_99): // >= 2.25
-		args = v225Args(exporter, tdp, listenAddress)
-	case !pmmAgentVersion.Less(newMongoExporterPMMVersion): // >= 2.10
-		args = []string{
-			"--mongodb.global-conn-pool",
-			"--compatible-mode",
-			"--web.listen-address=" + listenAddress + ":" + tdp.Left + " .listen_port " + tdp.Right,
-		}
-	default:
-		args = []string{
-			"--collect.collection",
-			"--collect.database",
-			"--collect.topmetrics",
-			"--no-collect.connpoolstats",
-			"--no-collect.indexusage",
-			"--web.listen-address=" + listenAddress + ":" + tdp.Left + " .listen_port " + tdp.Right,
-		}
+	if pmmAgentVersion.Less(v2_26_0) {
+		args = oldPMMAgentArgs(exporter, tdp, listenAddress, pmmAgentVersion)
+	} else {
+		args = v226Args(exporter, tdp, listenAddress, pmmAgentVersion)
 	}
 
 	args = collectors.FilterOutCollectors("--collect.", args, exporter.DisabledCollectors)
@@ -122,7 +101,31 @@ func mongodbExporterConfig(node *models.Node, service *models.Service, exporter
 	return res, nil
 }
 
-func v226Args(exporter *models.Agent, tdp *models.DelimiterPair, listenAddress string) []string {
+func oldPMMAgentArgs(exporter *models.Agent, tdp *models.DelimiterPair, listenAddress string, pmmAgentVersion *version.Parsed) []string {
+	var args []string
+	switch {
+	case !pmmAgentVersion.Less(v2_25_0): // >= 2.25
+		args = v225Args(exporter, tdp, listenAddress)
+	case !pmmAgentVersion.Less(newMongoExporterPMMVersion): // >= 2.10
+		args = []string{
+			"--mongodb.global-conn-pool",
+			"--compatible-mode",
+			"--web.listen-address=" + listenAddress + ":" + tdp.Left + " .listen_port " + tdp.Right, //nolint:goconst
+		}
+	default:
+		args = []string{
+			"--collect.collection",
+			"--collect.database",
+			"--collect.topmetrics",
+			"--no-collect.connpoolstats",
+			"--no-collect.indexusage",
+			"--web.listen-address=" + listenAddress + ":" + tdp.Left + " .listen_port " + tdp.Right,
+		}
+	}
+	return args
+}
+
+func v226Args(exporter *models.Agent, tdp *models.DelimiterPair, listenAddress string, pmmAgentVersion *version.Parsed) []string {
 	collectAll := false
 	if exporter.MongoDBOptions != nil {
 		collectAll = exporter.MongoDBOptions.EnableAllCollectors
@@ -135,6 +138,13 @@ func v226Args(exporter *models.Agent, tdp *models.DelimiterPair, listenAddress s
 
 	collectors := defaultCollectors(collectAll)
 
+	if !pmmAgentVersion.Less(v2_41_1) { // >= 2.41.1
+		collectors["shards"] = collectorArgs{
+			enabled:     collectAll,
+			enableParam: "--collector.shards",
+		}
+	}
+
 	for _, collector := range exporter.DisabledCollectors {
 		col, ok := collectors[strings.ToLower(collector)]
 		if !ok {
diff --git a/managed/services/victoriametrics/prometheus.go b/managed/services/victoriametrics/prometheus.go
index 242c54fa15..245a9c5014 100644
--- a/managed/services/victoriametrics/prometheus.go
+++ b/managed/services/victoriametrics/prometheus.go
@@ -72,26 +72,29 @@ func AddScrapeConfigs(l *logrus.Entry, cfg *config.Config, q *reform.Querier, //
 		// find Node address where the agent runs
 		var paramsHost string
 		var paramPMMAgentVersion *version.Parsed
+		var pmmAgent *models.Agent
+		if agent.PMMAgentID != nil {
+			// extract node address through pmm-agent
+			pmmAgent, err = models.FindAgentByID(q, *agent.PMMAgentID)
+			if err != nil {
+				return errors.WithStack(err)
+			}
+			paramPMMAgentVersion, err = version.Parse(pointer.GetString(pmmAgent.Version))
+			if err != nil {
+				l.Warnf("couldn't parse pmm-agent version for pmm-agent %s: %q", pmmAgent.AgentID, err)
+			}
+		}
 		switch {
 		// special case for push metrics mode,
 		// vmagent scrapes it from localhost.
 		case pushMetrics:
 			paramsHost = "127.0.0.1"
 		case agent.PMMAgentID != nil:
-			// extract node address through pmm-agent
-			pmmAgent, err := models.FindAgentByID(q, *agent.PMMAgentID)
-			if err != nil {
-				return errors.WithStack(err)
-			}
 			pmmAgentNode := &models.Node{NodeID: pointer.GetString(pmmAgent.RunsOnNodeID)}
 			if err = q.Reload(pmmAgentNode); err != nil {
 				return errors.WithStack(err)
 			}
 			paramsHost = pmmAgentNode.Address
-			paramPMMAgentVersion, err = version.Parse(pointer.GetString(pmmAgent.Version))
-			if err != nil {
-				l.Warnf("couldn't parse pmm-agent version for pmm-agent %s: %q", pmmAgent.AgentID, err)
-			}
 		case agent.RunsOnNodeID != nil:
 			externalExporterNode := &models.Node{NodeID: pointer.GetString(agent.RunsOnNodeID)}
 			if err = q.Reload(externalExporterNode); err != nil {
diff --git a/managed/services/victoriametrics/scrape_configs.go b/managed/services/victoriametrics/scrape_configs.go
index e41968f116..9dc595a871 100644
--- a/managed/services/victoriametrics/scrape_configs.go
+++ b/managed/services/victoriametrics/scrape_configs.go
@@ -388,7 +388,7 @@ func scrapeConfigsForMySQLdExporter(params *scrapeConfigParams) ([]*config.Scrap
 func scrapeConfigsForMongoDBExporter(params *scrapeConfigParams) ([]*config.ScrapeConfig, error) {
 	// Old pmm-agents doesn't have support of multiple resolution,
 	// so requesting mongodb_exporter metrics in two resolutions increases CPU and Memory usage.
-	if params.pmmAgentVersion == nil || params.pmmAgentVersion.Less(version.MustParse("2.25.99")) {
+	if params.pmmAgentVersion == nil || params.pmmAgentVersion.Less(version.MustParse("2.26.0-0")) {
 		hr, err := scrapeConfigForStandardExporter("hr", params.metricsResolution.HR, params, nil)
 		if err != nil {
 			return nil, err
@@ -419,7 +419,7 @@ func scrapeConfigsForMongoDBExporter(params *scrapeConfigParams) ([]*config.Scra
 			"indexstats",
 			"collstats",
 		}
-		if params.pmmAgentVersion != nil && !params.pmmAgentVersion.Less(version.MustParse("2.41.1-0")) {
+		if !params.pmmAgentVersion.Less(version.MustParse("2.41.1-0")) {
 			defaultCollectors = append(defaultCollectors, "shards")
 		}