diff --git a/REQUIRE b/REQUIRE
index 17d4c290..667cc14a 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,4 +1,4 @@
-julia 1.0
+julia 0.7
 LsqFit 0.6.0
 DiffEqBase 4.21.0
 RecursiveArrayTools 0.17.0