diff --git a/config/protocol.mainnet.neofs.yml b/config/protocol.mainnet.neofs.yml
index e788f6679..cf67d320e 100644
--- a/config/protocol.mainnet.neofs.yml
+++ b/config/protocol.mainnet.neofs.yml
@@ -2,7 +2,7 @@ ProtocolConfiguration:
   Magic: 91414437
   MaxTraceableBlocks: 2102400
   InitialGASSupply: 52000000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
   - 026fa34ec057d74c2fdf1a18e336d0bd597ea401a0b2ad57340d5c220d09f44086
diff --git a/config/protocol.mainnet.yml b/config/protocol.mainnet.yml
index b511485ec..fcd99245d 100644
--- a/config/protocol.mainnet.yml
+++ b/config/protocol.mainnet.yml
@@ -2,7 +2,7 @@ ProtocolConfiguration:
   Magic: 860833102
   MaxTraceableBlocks: 2102400
   InitialGASSupply: 52000000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
   - 03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c
diff --git a/config/protocol.privnet.docker.four.yml b/config/protocol.privnet.docker.four.yml
index 41a563f76..2a59d1f59 100644
--- a/config/protocol.privnet.docker.four.yml
+++ b/config/protocol.privnet.docker.four.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 56753
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.privnet.docker.one.yml b/config/protocol.privnet.docker.one.yml
index 277585598..eba250ec0 100644
--- a/config/protocol.privnet.docker.one.yml
+++ b/config/protocol.privnet.docker.one.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 56753
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.privnet.docker.single.yml b/config/protocol.privnet.docker.single.yml
index 5edc79742..4582b3cc9 100644
--- a/config/protocol.privnet.docker.single.yml
+++ b/config/protocol.privnet.docker.single.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 56753
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 1
+  TimePerBlock: 1s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.privnet.docker.three.yml b/config/protocol.privnet.docker.three.yml
index ae02382ef..7455b6932 100644
--- a/config/protocol.privnet.docker.three.yml
+++ b/config/protocol.privnet.docker.three.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 56753
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.privnet.docker.two.yml b/config/protocol.privnet.docker.two.yml
index 4e78e8a43..ffc2ffaf3 100644
--- a/config/protocol.privnet.docker.two.yml
+++ b/config/protocol.privnet.docker.two.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 56753
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.privnet.yml b/config/protocol.privnet.yml
index 17970f160..c4fe64fec 100644
--- a/config/protocol.privnet.yml
+++ b/config/protocol.privnet.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 56753
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.testnet.neofs.yml b/config/protocol.testnet.neofs.yml
index 8945e5077..90a222897 100644
--- a/config/protocol.testnet.neofs.yml
+++ b/config/protocol.testnet.neofs.yml
@@ -2,7 +2,7 @@ ProtocolConfiguration:
   Magic: 735783775
   MaxTraceableBlocks: 2102400
   InitialGASSupply: 52000000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
   - 0337f5f45e5be5aeae4a919d0787fcb743656560949061d5b8b05509b85ffbfd53
diff --git a/config/protocol.testnet.yml b/config/protocol.testnet.yml
index 30696bc06..259bab32c 100644
--- a/config/protocol.testnet.yml
+++ b/config/protocol.testnet.yml
@@ -5,7 +5,7 @@ ProtocolConfiguration:
   MaxTraceableBlocks: 2102400
   MaxTransactionsPerBlock: 5000
   InitialGASSupply: 52000000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
   - 023e9b32ea89b94d066e649b124fd50e396ee91369e8e2a6ae1b11c170d022256d
diff --git a/config/protocol.unit_testnet.single.yml b/config/protocol.unit_testnet.single.yml
index fa7b0f066..cb41aa4d1 100644
--- a/config/protocol.unit_testnet.single.yml
+++ b/config/protocol.unit_testnet.single.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 42
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 1
+  TimePerBlock: 1s
   MemPoolSize: 100
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
diff --git a/config/protocol.unit_testnet.yml b/config/protocol.unit_testnet.yml
index 345d292e5..6b2eff506 100644
--- a/config/protocol.unit_testnet.yml
+++ b/config/protocol.unit_testnet.yml
@@ -1,7 +1,7 @@
 ProtocolConfiguration:
   Magic: 42
   MaxTraceableBlocks: 200000
-  SecondsPerBlock: 15
+  TimePerBlock: 15s
   MemPoolSize: 50000
   StandbyCommittee:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2