diff --git a/DeepPATH_code/requirements.txt b/DeepPATH_code/requirements.txt
old mode 100755
new mode 100644
index 01cc97b..d93ae1e
--- a/DeepPATH_code/requirements.txt
+++ b/DeepPATH_code/requirements.txt
@@ -35,7 +35,7 @@ cycler==0.10.0
 cymem==1.31.2
 Cython==0.28.4
 cytoolz==0.9.0.1
-dask==0.18.2
+dask==2021.10.0
 decorator==4.3.0
 deepmedic==0.7.4
 dicom==0.9.9.post1