diff --git a/.circleci/config.yml b/.circleci/config.yml
index ffef68d4..e8dd1841 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,6 +3,7 @@ jobs:
   build_test:
     docker:
       - image: quay.io/token/go-build:v0.3.7
+    resource_class: xlarge
     working_directory: /home/circleci/github.com/tokencard/contracts
     steps:
       - checkout
@@ -48,6 +49,7 @@ jobs:
   mythril:
     docker:
       - image: mythril/myth@sha256:75605a2a7e848e416f471a67159d6812feaa45e03ddd352aac588e505d68e5c5
+    resource_class: xlarge
     working_directory: /tmp/contracts
     parallelism: 7
     steps:
@@ -157,6 +159,7 @@ jobs:
   echidna:
     docker:
       - image: trailofbits/eth-security-toolbox@sha256:3fb96e2d9de772f5e97f1c3c650c8a3d28660f8a64a60b76269da1ac19b86a28
+    resource_class: xlarge
     working_directory: /tmp/contracts
     parallelism: 6
     steps: