diff --git a/requirements.txt b/requirements.txt
index 89a5a21..1edf2fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy
 pandas
-dask
-pyarrow
+dask==1.1.4
+pyarrow==0.12.1
 tqdm
 pytorch-pretrained-bert==0.6.2
 sklearn