diff --git a/build.sh b/build.sh
index aebc11052fd7d97f555bc5f331cbc8f222bcede0..1015ced245f71f0f85cad0da8ae562acb0d7a550 100644
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,5 @@
 #! bin/sh
 for n in `find . -name "*.py"`
 do
-  python $n
+  python3 $n
 done
\ No newline at end of file