diff --git a/.buildkite/runtests.yml b/.buildkite/runtests.yml
index 75f8fd348..09f18ca23 100644
--- a/.buildkite/runtests.yml
+++ b/.buildkite/runtests.yml
@@ -20,7 +20,7 @@ steps:
 
           julia -e 'println("--- :julia: Running tests")
               using Pkg
-              Pkg.test("KomaMRICore"; julia_args=`--threads=4`)'
+              Pkg.test("KomaMRICore")'
         agents:
           arch: "aarch64" 
           queue: "juliaecosystem"