diff --git a/pkgs/development/interpreters/erlang/R21.nix b/pkgs/development/interpreters/erlang/R21.nix
index b787f3f44f54..28166dfc0b0a 100644
--- a/pkgs/development/interpreters/erlang/R21.nix
+++ b/pkgs/development/interpreters/erlang/R21.nix
@@ -1,8 +1,8 @@
 { mkDerivation }:
 
 mkDerivation rec {
-  version = "21.2";
-  sha256 = "0v9smdp2vxkpsz65a6ypwzl12fqdfrsi7k29f5i7af0v27r308cm";
+  version = "21.2.3";
+  sha256 = "1v47c7bddbp31y6f8yzdjyvgcx9sskxql33k7cs0p5fmr05hhxws";
 
   prePatch = ''
     substituteInPlace configure.in --replace '`sw_vers -productVersion`' '10.10'