diff --git a/runtime/gdev/src/lib.rs b/runtime/gdev/src/lib.rs
index 5c4491398802f43fae43c87551fbad5483c5ca92..8e60afe019ababc2081bfb00ddbde58640016c6b 100644
--- a/runtime/gdev/src/lib.rs
+++ b/runtime/gdev/src/lib.rs
@@ -93,7 +93,7 @@ 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,
diff --git a/xtask/src/release_runtime.rs b/xtask/src/release_runtime.rs
index a08f03e39145a7c374882083552aa1dbbd0b592f..84401831c5e6619bf7697a9a862ca43d2440a8aa 100644
--- a/xtask/src/release_runtime.rs
+++ b/xtask/src/release_runtime.rs
@@ -91,7 +91,7 @@ pub(super) async fn release_runtime(spec_version: u32) -> Result<()> {
             "RUNTIME_DIR=runtime/gdev",
             "-v",
             &format!("{}:/build", pwd),
-            "paritytech/srtool:1.62.0",
+            "paritytech/srtool:1.66.1-0.9.25",
             "build",
             "--app",
             "--json",