Make compilation deterministic
diff --git a/rebar.config b/rebar.config
index 52e1b87..88eb190 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,3 +1,7 @@
+{erl_opts, [
+  deterministic
+ ]}.
+
 {deps, []}.
 
 {profiles, [