diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8f56b0a..072b0ac 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -13,3 +13,7 @@ Use of UTF-8 characters in program code
 ---------------------------------------
 We have decided not to use them. See issue #18.
 
+Supported Julia versions
+------------------------
+
+We support Julia versions 0.4+