diff --git a/rebar.config b/rebar.config
index 341af5d..3a2b39d 100644
--- a/rebar.config
+++ b/rebar.config
@@ -83,7 +83,7 @@
         ]},
         {deps, [
             {json_polyfill, "0.2.1"},
-            {doctest, "0.12.0"},
+            {doctest, "0.13.0"},
             {jiffy, "1.1.2"},
             {thoas, "1.2.1"}
         ]},