diff --git a/pallets/transaction-fee/src/lib.rs b/pallets/transaction-fee/src/lib.rs
index 53e6cb816b..c18599e0d5 100644
--- a/pallets/transaction-fee/src/lib.rs
+++ b/pallets/transaction-fee/src/lib.rs
@@ -47,7 +47,7 @@ impl WeightToFeePolynomial for LinearWeightToFee {
     fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {
         let coefficient: WeightToFeeCoefficient<Self::Balance> = WeightToFeeCoefficient {
             coeff_integer: TaoBalance::new(0),
-            coeff_frac: Perbill::from_parts(50_000),
+            coeff_frac: Perbill::from_parts(500_000),
             negative: false,
             degree: 1,
         };
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
index 5e3436a78c..4bbb6a88c8 100644
--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -268,7 +268,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     //   `spec_version`, and `authoring_version` are the same between Wasm and native.
     // This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
     //   the compatible custom types.
-    spec_version: 390,
+    spec_version: 391,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,