diff --git a/.circleci/config.yml b/.circleci/config.yml
index b13443f95..0d25b6a7c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -60,7 +60,7 @@ jobs:
       - run: meson build --buildtype=debugoptimized
       - run: ninja -Cbuild -j9
       # TOOD: increase timeouts and remove --no-suite=slow
-      - run: RUN_VALGRIND=1 meson test -Cbuild --no-suite=slow --wrap='valgrind --leak-check=full --error-exitcode=1' --print-errorlogs
+      - run: RUN_VALGRIND=1 meson test -Cbuild --no-suite=slow --wrap='valgrind --leak-check=full --error-exitcode=1' --print-errorlogs --num-processes=$(nproc)
 
   alpine:
     docker: