diff --git a/pkgs/development/coq-modules/paco/default.nix b/pkgs/development/coq-modules/paco/default.nix
index 0a8bb78eeb70..d01bfbed721b 100644
--- a/pkgs/development/coq-modules/paco/default.nix
+++ b/pkgs/development/coq-modules/paco/default.nix
@@ -5,9 +5,10 @@ with lib; mkCoqDerivation {
   owner = "snu-sf";
   inherit version;
   defaultVersion = with versions; switch coq.coq-version [
-    { case = range "8.6" "8.13"; out = "4.0.2"; }
+    { case = range "8.6" "8.13"; out = "4.1.1"; }
     { case = isEq "8.5";         out = "1.2.8"; }
   ] null;
+  release."4.1.1".sha256 = "1qap8cyv649lr1s11r7h5jzdjd4hsna8kph15qy5fw24h5nx6byy";
   release."4.0.2".sha256 = "1q96bsxclqx84xn5vkid501jkwlc1p6fhb8szrlrp82zglj58b0b";
   release."1.2.8".sha256 = "05fskx5x1qgaf9qv626m38y5izichzzqc7g2rglzrkygbskrrwsb";
   releaseRev = v: "v${v}";