diff --git a/runtime/g1/src/lib.rs b/runtime/g1/src/lib.rs
index 30289b1aa54b3ec16a0706ec9fa9634559c833bb..c3a5612de868ceec2b87bb0a45cb50f36d2ec21e 100644
--- a/runtime/g1/src/lib.rs
+++ b/runtime/g1/src/lib.rs
@@ -84,7 +84,7 @@ 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: 300,
+    spec_version: 400,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,
diff --git a/runtime/gdev/src/lib.rs b/runtime/gdev/src/lib.rs
index eec2dc9c2bb696cc5e0b5f97f8e212fef237bd49..33e172eb2b0e88afb816ec25a07d95d32ff5dbb1 100644
--- a/runtime/gdev/src/lib.rs
+++ b/runtime/gdev/src/lib.rs
@@ -90,7 +90,7 @@ 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: 300,
+    spec_version: 400,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,
diff --git a/runtime/gtest/src/lib.rs b/runtime/gtest/src/lib.rs
index 7d1a7fa173fae7900b92eae1c6d2ff2387016730..0bad5440c5df87c835acee8b9be595bfa75406f1 100644
--- a/runtime/gtest/src/lib.rs
+++ b/runtime/gtest/src/lib.rs
@@ -84,7 +84,7 @@ 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: 300,
+    spec_version: 400,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,