diff --git a/pkgs/development/coq-modules/CoLoR/default.nix b/pkgs/development/coq-modules/CoLoR/default.nix
index 4c5b6a4f6a9a..46738343431a 100644
--- a/pkgs/development/coq-modules/CoLoR/default.nix
+++ b/pkgs/development/coq-modules/CoLoR/default.nix
@@ -5,11 +5,13 @@ with lib; mkCoqDerivation {
   owner = "fblanqui";
   inherit version;
   defaultVersion = with versions; switch coq.coq-version [
+    {case = range "8.12" "8.13"; out = "1.8.1"; }
     {case = range "8.10" "8.11"; out = "1.7.0"; }
     {case = range "8.8"  "8.9";  out = "1.6.0"; }
     {case = range "8.6"  "8.7";  out = "1.4.0"; }
   ] null;
 
+  release."1.8.1".sha256 = "0knhca9fffmyldn4q16h9265i7ih0h4jhcarq4rkn0wnn7x8w8yw";
   release."1.7.0".rev    = "08b5481ed6ea1a5d2c4c068b62156f5be6d82b40";
   release."1.7.0".sha256 = "1w7fmcpf0691gcwq00lm788k4ijlwz3667zj40j5jjc8j8hj7cq3";
   release."1.6.0".rev    = "328aa06270584b578edc0d2925e773cced4f14c8";