diff --git a/make.sh b/make.sh
index 3ff6529..937b1a2 100644
--- a/make.sh
+++ b/make.sh
@@ -17,6 +17,8 @@ jar cvfm ../astral.$version.jar ../manifest.text phylonet/util/BitSet.* phylonet
 
 cd ..
 
+strip-nondeterminism --type jar astral.$version.jar
+
 chmod +x astral.$version.jar
 sed -e "s/__astral.jar__/astral.$version.jar/g" -e "s/__astral.zip__/Astral.$version.zip/g" README.template.md > README.md
 sed -e "s/__astral.jar__/astral.$version.jar/g" -e "s/__astral.zip__/Astral.$version.zip/g" astral-tutorial-template.md > astral-tutorial.md
@@ -32,6 +34,7 @@ ln -s ../astral-tutorial.pdf .
 cd ..
 rm -f Astral.$version.zip
 zip -r Astral.$version.zip Astral 
+strip-nondeterminism --type zip Astral.$version.zip
 
 set +x
 echo "