diff --git a/.drone.yml b/.drone.yml
index 8b9f15919..bb27984f9 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -30,6 +30,7 @@ steps:
     environment:
       LEMMY_DATABASE_URL: postgres://lemmy:password@database:5432/lemmy
       RUST_BACKTRACE: 1
+      RUST_TEST_THREADS: 1
     commands:
       - sudo apt-get update
       - sudo apt-get -y install --no-install-recommends espeak postgresql-client
@@ -107,6 +108,7 @@ steps:
     environment:
       LEMMY_DATABASE_URL: postgres://lemmy:password@database:5432/lemmy
       RUST_BACKTRACE: 1
+      RUST_TEST_THREADS: 1
     commands:
       - apt-get update
       - apt-get -y install --no-install-recommends espeak postgresql-client libssl-dev pkg-config libpq-dev