diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5fa9d7dff0..00a8cada06 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     environment:
-      - SBT: "sbt -v -mem 2048 -J-Xmx4g -J-Xss10M"
+      - SBT: "sbt -v -mem 8192 J-Xss10M"
     docker:
       - image: rtkaczyk/mantis-circleci:v6
     steps:
diff --git a/project/build.properties b/project/build.properties
index dca663deda..cb6a5a8a90 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version = 1.2.8
+sbt.version = 1.3.13
diff --git a/src/rpcTest/resources/privateNetConfig/conf/application.ini b/src/rpcTest/resources/privateNetConfig/conf/application.ini
index 4e9380b955..86a371862c 100644
--- a/src/rpcTest/resources/privateNetConfig/conf/application.ini
+++ b/src/rpcTest/resources/privateNetConfig/conf/application.ini
@@ -1 +1 @@
--Dconfig.file=./conf/rpc-test-private.conf -Dlogback.configurationFile=./conf/rpc-test-logback.xml -J-Xmx4g -J-Xss10M
+-Dconfig.file=./conf/rpc-test-private.conf -Dlogback.configurationFile=./conf/rpc-test-logback.xml -J-Xss10M