diff --git a/.github/workflows/_test.yml b/.github/workflows/_test.yml
index 6cd577569..306a180cd 100644
--- a/.github/workflows/_test.yml
+++ b/.github/workflows/_test.yml
@@ -21,7 +21,7 @@ jobs:
     # TODO - periodically check if conditional services are supported; https://github.com/actions/runner/issues/822
     services:
       devnet:
-        image: ${{ (inputs.use-devnet) && 'shardlabs/starknet-devnet-rs:b41e566a3f17aa0e51871f02d5165959e50ce358-amd-seed0' || '' }}
+        image: ${{ (inputs.use-devnet) && 'shardlabs/starknet-devnet-rs:0.0.3-seed0' || '' }}
         ports:
           - 5050:5050
 
diff --git a/src/channel/rpc_0_6.ts b/src/channel/rpc_0_6.ts
index 05952e2bf..7c511a763 100644
--- a/src/channel/rpc_0_6.ts
+++ b/src/channel/rpc_0_6.ts
@@ -374,7 +374,7 @@ export class RpcChannel {
   ) {
     const block_id = new Block(blockIdentifier).identifier;
     let flags = {};
-    if (isVersion('0.6', await this.getSpecVersion())) {
+    if (!isVersion('0.5', await this.getSpecVersion())) {
       flags = {
         simulation_flags: skipValidate ? [RPC.ESimulationFlag.SKIP_VALIDATE] : [],
       };