diff --git a/.circleci/config.yml b/.circleci/config.yml
index 045225659..011246c1f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -130,7 +130,7 @@ jobs:
       BASH_ENV: "~/.bashrc"
       CCACHE_MAXSIZE: << parameters.ccache_maxsize >>
       CLICOLOR_FORCE: "1"
-      MAKEFLAGS: "OUTPUT_DIR=build"
+      MAKEFLAGS: "PARALLEL_JOBS=3 OUTPUT_DIR=build"
     steps:
       # Checkout / fetch. {{{
       - checkout