diff --git a/Cargo.toml b/Cargo.toml
index dc74fc2..d9dc124 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,4 +11,4 @@ crate-type = ["cdylib"]
 [dependencies]
 pyo3 = "0.20.0"
 mzdata = "0.13.0"
-timsrust = "0.2.3"
+timsrust = "0.2.4"
diff --git a/tests/test.py b/tests/test.py
index 68b308f..8910a47 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -30,7 +30,7 @@ def test_bruker_tdf_reading():
 
 
 def test_bruker_minitdf_reading():
-    precursor = get_precursor_info("tests/data/test.ms2")["2"]
+    precursor = get_precursor_info("tests/data/test.ms2")["3"]
     assert precursor.mz == pytest.approx(502, 0.0001)
     assert precursor.charge == 2
     assert precursor.intensity == 0