diff --git a/rebar.config b/rebar.config
index 9cbcba9..4485a22 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,3 +1,3 @@
-{erl_opts, [debug_info, warn_unused_vars, nowarn_shadow_vars, warn_unused_import]}.
+{erl_opts, [debug_info, warnings_as_errors, warn_unused_vars, nowarn_shadow_vars, warn_unused_import]}.
 {xref_checks, [undefined_function_calls, deprecated_function_calls]}.
 {eunit_opts, [verbose]}.