diff --git a/runtime/gdev/src/lib.rs b/runtime/gdev/src/lib.rs
index 770191a20d9addbc65e0625b25eb2a73f5dfd63d..e62407984343f5e93c8f952c142f32d3c1af7705 100644
--- a/runtime/gdev/src/lib.rs
+++ b/runtime/gdev/src/lib.rs
@@ -91,7 +91,7 @@ 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: 400,
+    spec_version: 500,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,