diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5666efc..b4eda70 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -40,7 +40,7 @@ jobs:
 
       - uses: "actions-rs/cargo@v1"
         with:
-          command: "test"
+          command: "test --test-threads=1"
 
   fmt:
     name: "Cargo format"