diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a2ffbc9..a27bd45 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -47,4 +47,4 @@ jobs:
             cp mopac/build/mopac mopac/build/libmopac.so /opt/mopac/.
       # https://twitter.com/jonhoo/status/1571290371124260865
       - name: cargo test --locked
-        run: cargo test --locked --all-features --all-targets -- --include-ignored --test-threads=1 --nocapture
+        run: cargo test --locked --all-features --all-targets -- --include-ignored
diff --git a/tests/run.rs b/tests/run.rs
index ed892bf..dacc206 100644
--- a/tests/run.rs
+++ b/tests/run.rs
@@ -18,11 +18,7 @@ fn run(path: &str, other_files: &[&str]) -> std::io::Result<()> {
         std::fs::copy(file, dir.path().join(filename))?;
     }
     let mut cmd = Command::cargo_bin("pbqff").unwrap();
-    let assert = cmd
-        .arg("pbqff.toml")
-        .args(["-t", "1"])
-        .current_dir(&dir)
-        .assert();
+    let assert = cmd.arg("pbqff.toml").current_dir(&dir).assert();
     let output = assert.get_output();
 
     assert!(