diff --git a/.github/workflows/bundler-spec-tests.yml b/.github/workflows/bundler-spec-tests.yml
index 2bf92dc7..f3ade691 100644
--- a/.github/workflows/bundler-spec-tests.yml
+++ b/.github/workflows/bundler-spec-tests.yml
@@ -48,12 +48,12 @@ jobs:
           --http.api personal,eth,net,web3,debug \
           --http.corsdomain '*' \
           --http.addr "0.0.0.0" \
-          --nodiscover --maxpeers 0 --mine \
+          --nodiscover --maxpeers 0 \
           --networkid 1337 \
           --dev \
           --allow-insecure-unlock \
           --rpc.allow-unprotected-txs \
-          --dev.gaslimit 20000000
+          --dev.gaslimit 20000000 &
 
       - name: Deploy ERC-4337 contracts
         working-directory: ./bundler-spec-tests