diff --git a/go.mod b/go.mod
index c0ff9c6..e3d3d68 100644
--- a/go.mod
+++ b/go.mod
@@ -4,12 +4,12 @@ go 1.20
 
 require (
 	github.com/essentialkaos/depsy v1.1.0
-	github.com/essentialkaos/ek/v12 v12.75.1
+	github.com/essentialkaos/ek/v12 v12.76.0
 	github.com/essentialkaos/go-linenoise/v3 v3.4.0
 	github.com/essentialkaos/redy/v4 v4.4.0
 )
 
 require (
-	golang.org/x/crypto v0.12.0 // indirect
-	golang.org/x/sys v0.11.0 // indirect
+	golang.org/x/crypto v0.13.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 1ee01f4..d0ff026 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,8 @@
 github.com/essentialkaos/check v1.4.0 h1:kWdFxu9odCxUqo1NNFNJmguGrDHgwi3A8daXX1nkuKk=
 github.com/essentialkaos/depsy v1.1.0 h1:U6dp687UkQwXlZU17Hg2KMxbp3nfZAoZ8duaeUFYvJI=
 github.com/essentialkaos/depsy v1.1.0/go.mod h1:kpiTAV17dyByVnrbNaMcZt2jRwvuXClUYOzpyJQwtG8=
-github.com/essentialkaos/ek/v12 v12.75.1 h1:HE8/uWED+QgyT6HIcRULqjMYWKhqQ1rkfa/ozcva1eQ=
-github.com/essentialkaos/ek/v12 v12.75.1/go.mod h1:juDcZWOWaj1QmYShZkT9RzdqJ3n0tmeP/iq4sw5fQF0=
+github.com/essentialkaos/ek/v12 v12.76.0 h1:TDm6q4NFNpiCeozcLigf9V2Z0Pzib7NtPH7F2dsfcmw=
+github.com/essentialkaos/ek/v12 v12.76.0/go.mod h1:S9/XSKhEAdylL3PF8GAnUeKKyd92VrDGR4YGacHfz0c=
 github.com/essentialkaos/go-linenoise/v3 v3.4.0 h1:g72w8x+/HIwOMBVvNaPYp+wMWVHrYZwzFAF7OfZR5Ts=
 github.com/essentialkaos/go-linenoise/v3 v3.4.0/go.mod h1:t1kNLY2bSMQCy1JXOefD2BDLs/TTPMtTv3DFNV5uDSI=
 github.com/essentialkaos/redy/v4 v4.4.0 h1:6r6AkZiDkFWPqnvl0M+u7mcaaWQaeeiZOoLqLAMcnzQ=
@@ -10,7 +10,7 @@ github.com/essentialkaos/redy/v4 v4.4.0/go.mod h1:0TUOQZGzhRmZD13sCVUtYUYCa3Xd8v
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
-golang.org/x/crypto v0.12.0 h1:tFM/ta59kqch6LlvYnPa0yx5a83cL2nHflFhYKvv9Yk=
-golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
-golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
-golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/crypto v0.13.0 h1:mvySKfSWJ+UKUii46M40LOvyWfN0s2U+46/jDd0e6Ck=
+golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
+golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/sync/master/master.go b/sync/master/master.go
index cbbde92..f815b62 100644
--- a/sync/master/master.go
+++ b/sync/master/master.go
@@ -504,7 +504,7 @@ func fetchHandler(w http.ResponseWriter, r *http.Request) {
 		log.Error("Can't encode response: %v", err)
 	}
 
-	maxSyncWait := CORE.Config.GetD(CORE.REPLICATION_MAX_SYNC_WAIT)
+	maxSyncWait := CORE.Config.GetD(CORE.REPLICATION_MAX_SYNC_WAIT, time.Second)
 	maxInitTimeDur := maxSyncWait * time.Duration(len(fetchResponse.Instances))
 	deadline := time.Now().Add(maxInitTimeDur)
 
diff --git a/sync/minion/minion.go b/sync/minion/minion.go
index 3583282..6befda8 100644
--- a/sync/minion/minion.go
+++ b/sync/minion/minion.go
@@ -991,7 +991,7 @@ func syncBlocker(id int) {
 
 	log.Info("(%3d) Starting sync with master instance…", id)
 
-	time.Sleep(CORE.Config.GetD(CORE.REPLICATION_INIT_SYNC_DELAY, 3*time.Second))
+	time.Sleep(CORE.Config.GetD(CORE.REPLICATION_INIT_SYNC_DELAY, time.Second, 3*time.Second))
 
 	syncingWaitLoop(id)
 }
@@ -999,7 +999,7 @@ func syncBlocker(id int) {
 // syncingWaitLoop blocks main sync process till syncing will be completed
 func syncingWaitLoop(id int) {
 	start := time.Now().Unix()
-	maxWait := CORE.Config.GetD(CORE.REPLICATION_MAX_SYNC_WAIT)
+	maxWait := CORE.Config.GetD(CORE.REPLICATION_MAX_SYNC_WAIT, time.Second)
 	deadline := time.Now().Add(maxWait)
 
 	log.Info(