diff --git a/sourcefinder/utils.py b/sourcefinder/utils.py
index 4558a081..2f3ba363 100644
--- a/sourcefinder/utils.py
+++ b/sourcefinder/utils.py
@@ -11,9 +11,7 @@
 from sourcefinder.gaussian import gaussian
 from sourcefinder.utility import coordinates
 
-from numba import njit, prange, guvectorize, config as numba_config
-
-numba_config.THREADING_LAYER = "workqueue"
+from numba import njit, prange, guvectorize
 
 
 def generate_subthresholds(min_value, max_value, num_thresholds):