diff --git a/.github/workflows/scala3-build.yml b/.github/workflows/scala3-build.yml
index bec302ccc5..48a85f9597 100644
--- a/.github/workflows/scala3-build.yml
+++ b/.github/workflows/scala3-build.yml
@@ -29,6 +29,7 @@ jobs:
         run: |
           sbt -jvm-opts .jvmopts-ci \
             -Dakka.build.scalaVersion=3.0 \
+            -Dakka.test.multi-in-test=false \
             -Dakka.test.tags.exclude=performance,timing,long-running \
             akka-actor-tests/test \
             akka-actor-testkit-typed/test \