diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index bfcbef68..7ca6f0c0 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -98,6 +98,14 @@ jobs:
     - name: Checkout nitro-testnode
       if: ${{ matrix.crate == 'rosetta-testing-arbitrum' }}
       run: git clone -b release --depth=1 --no-tags --recurse-submodules https://github.com/ManojJiSharma/nitro-testnode.git
+    
+    - name: Checkout Optimism
+      if: ${{ matrix.crate == 'rosetta-testing-base' }}
+      run: |
+        git clone https://github.com/ethereum-optimism/optimism.git
+        cd optimism
+        make devnet-up
+
 
     - name: Start arbitrum nitro-testnode
       if: ${{ matrix.crate == 'rosetta-testing-arbitrum' }}
diff --git a/chains/base/src/lib.rs b/chains/base/src/lib.rs
index 268fc761..ad4f9a3f 100644
--- a/chains/base/src/lib.rs
+++ b/chains/base/src/lib.rs
@@ -54,11 +54,11 @@ mod tests {
 
     /// Account used to fund other testing accounts.
     const FUNDING_ACCOUNT_PRIVATE_KEY: [u8; 32] =
-        hex!("d43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d");
+        hex!("ac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80");
 
     /// Base rpc url
     const BASE_RPC_WS_URL: &str =
-        "wss://virtual.base-sepolia.rpc.tenderly.co/a6d68374-b6af-4d42-8983-dbb5726eb85a";
+        "http://127.0.0.1:8545";
 
     sol! {
         interface TestContract {