diff --git a/pkgs/development/interpreters/erlang/R23.nix b/pkgs/development/interpreters/erlang/R23.nix
index e0e2357cc24..3ad55d806a5 100644
--- a/pkgs/development/interpreters/erlang/R23.nix
+++ b/pkgs/development/interpreters/erlang/R23.nix
@@ -3,8 +3,8 @@
 # How to obtain `sha256`:
 # nix-prefetch-url --unpack https://github.com/erlang/otp/archive/OTP-${version}.tar.gz
 mkDerivation {
-  version = "23.1";
-  sha256 = "1k74g6m2lidhp04vrcwrg0jszj3zwxyrm4fsma09sfn9rfsra36g";
+  version = "23.1.2";
+  sha256 = "06dp2sw486khy2lc34cw5dca58ii5jvi26dpchiqxnmyvd6995z0";
 
   prePatch = ''
     substituteInPlace make/configure.in --replace '`sw_vers -productVersion`' "''${MACOSX_DEPLOYMENT_TARGET:-10.12}"