diff --git a/pkgs/development/interpreters/erlang/R21.nix b/pkgs/development/interpreters/erlang/R21.nix
index 28166dfc0b0..8c4e1561ec0 100644
--- a/pkgs/development/interpreters/erlang/R21.nix
+++ b/pkgs/development/interpreters/erlang/R21.nix
@@ -1,8 +1,8 @@
 { mkDerivation }:
 
 mkDerivation rec {
-  version = "21.2.3";
-  sha256 = "1v47c7bddbp31y6f8yzdjyvgcx9sskxql33k7cs0p5fmr05hhxws";
+  version = "21.3.7.1";
+  sha256 = "03vbp22vwra3zz76q3sjv23lmic60gi96a7dncry8whbfp4i4j8a";
 
   prePatch = ''
     substituteInPlace configure.in --replace '`sw_vers -productVersion`' '10.10'