diff --git a/requirements.txt b/requirements.txt
index 218f87a..4b8013f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,9 +3,10 @@ numpy>=1.18
 scipy
 matplotlib>=3.0.0
 pathos
+dill==0.3.5.1
 sklearn
 pandas
 pybind11
 awkde @ git+https://github.com/noxtoby/awkde.git
 kde_ebm @ git+https://github.com/ucl-pond/kde_ebm.git
-tqdm
\ No newline at end of file
+tqdm