--- a
+++ b/requirements.txt
@@ -0,0 +1,6 @@
+# tensorflow-gpu==2.0.0-alpha0
+tensorflow==2.0.0-alpha0
+numpy>=1.15
+tqdm==4.28.1
+nibabel==2.3.1      # Preprocessing.
+scipy==1.3.0        # Hausdorff distance.