diff --git a/pkgs/development/beam-modules/default.nix b/pkgs/development/beam-modules/default.nix
index 26bed216acf..c5be1c78a55 100644
--- a/pkgs/development/beam-modules/default.nix
+++ b/pkgs/development/beam-modules/default.nix
@@ -42,7 +42,7 @@ let
         buildMix = callPackage ./build-mix.nix {};
 
         # BEAM-based languages.
-        elixir = elixir_1_6;
+        elixir = elixir_1_7;
 
         elixir_1_7 = lib.callElixir ../interpreters/elixir/1.7.nix {
           inherit rebar erlang;