diff --git a/pkgs/development/interpreters/elixir/1.9.nix b/pkgs/development/interpreters/elixir/1.9.nix
index 622f2343c6e1..41601eeaa118 100644
--- a/pkgs/development/interpreters/elixir/1.9.nix
+++ b/pkgs/development/interpreters/elixir/1.9.nix
@@ -1,7 +1,7 @@
 { mkDerivation }:
 
 mkDerivation rec {
-  version = "1.9.0";
-  sha256 = "0yfqh07wjgm10v6acn5pw8l8jndjly5kpzgw4harlj81wcaymlsw";
+  version = "1.9.1";
+  sha256 = "106s2a3dykc5iwfrd5icqd737yfzaz1dw4x5v1j5z2fvf46h96dx";
   minimumOTPVersion = "20";
 }