diff --git a/circle.yml b/circle.yml
index eece951..f4c4fb9 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,6 +1,8 @@
 machine:
   node:
     version: v8.2.0
+  environment:
+    JVM_OPTS: "-Xms512m -Xmx1024m"
 dependencies:
   override:
     - lein deps