diff --git a/runtime/calamari/src/lib.rs b/runtime/calamari/src/lib.rs
index c3da355b6..fa8933cfc 100644
--- a/runtime/calamari/src/lib.rs
+++ b/runtime/calamari/src/lib.rs
@@ -134,7 +134,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("calamari"),
     impl_name: create_runtime_str!("calamari"),
     authoring_version: 2,
-    spec_version: 4101,
+    spec_version: 4102,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 13,
diff --git a/runtime/dolphin/src/lib.rs b/runtime/dolphin/src/lib.rs
index 06ee57ef9..fa318b900 100644
--- a/runtime/dolphin/src/lib.rs
+++ b/runtime/dolphin/src/lib.rs
@@ -126,7 +126,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("dolphin"),
     impl_name: create_runtime_str!("dolphin"),
     authoring_version: 2,
-    spec_version: 4101,
+    spec_version: 4102,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 8,
diff --git a/runtime/manta/src/lib.rs b/runtime/manta/src/lib.rs
index 22addb274..27f55ae48 100644
--- a/runtime/manta/src/lib.rs
+++ b/runtime/manta/src/lib.rs
@@ -136,7 +136,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("manta"),
     impl_name: create_runtime_str!("manta"),
     authoring_version: 1,
-    spec_version: 4101,
+    spec_version: 4102,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 3,
@@ -354,7 +354,7 @@ impl pallet_balances::Config for Runtime {
 }
 
 parameter_types! {
-    pub const TransactionLengthToFeeCoeff: Balance = 40 * mMANTA;
+    pub const TransactionLengthToFeeCoeff: Balance = 10 * uMANTA;
     pub const WeightToFeeCoeff: Balance = 50_000_000;
 }