diff --git a/pkgs/development/interpreters/erlang/R20.nix b/pkgs/development/interpreters/erlang/R20.nix
index 19ac6d35592..c408d21d9b3 100644
--- a/pkgs/development/interpreters/erlang/R20.nix
+++ b/pkgs/development/interpreters/erlang/R20.nix
@@ -1,8 +1,8 @@
 { mkDerivation }:
 
 mkDerivation rec {
-  version = "20.3.8";
-  sha256 = "1griiszz1x34idmwi6234br7bqd1d7mimim63amjgi9ds79jh6jj";
+  version = "20.3.8.9";
+  sha256 = "0v2iiyzss8hiih98wvj0gi2qzdmmhh7bvc9p025wlfm4k7r1109a";
 
   prePatch = ''
     substituteInPlace configure.in --replace '`sw_vers -productVersion`' '10.10'